Dallas Cowboys quarterback Tony Romo (9) scrambles as Minnesota Vikings defensive end Brian Robison (96) tackles during an NFL football game, Sunday, Oct. 21, 2007, in Irving, Texas. (AP Photo/LM Otero)

Minnesota Vikings defensive end Brian Robison is shown during a NFL football game against the Green Bay Packers Sunday, Nov. 30, 2007 in Minneapoliis. (AP Photo/Jim Mone)

FILE Minnesota Vikings defensive end Brian Robison, right, celebrates after sacking Atlanta Falcons quarterback Joey Harrington during the fourth quarter in a football game, Sunday, Sept. 9, 2007 in Minneapolis. Robison had two sacks in his NFL debut Sunday against Atlanta. His speed off the edge and relentless pursuit are two things the Vikings defense has sorely lacked in recent years. (AP Photo/Tom Olmscheid)

Minnesota Vikings defensive end Brian Robison during an NFL football game against the Green Bay Packers Sunday, Sept. 30, 2007 in Minneapolis. (AP Photo/Jim Mone)

Minnesota Vikings' Brian Robison (96) causes Arizona Cardinals' Kurt Warner (13) to fumble the ball in the second quarter of an NFL football game Sunday, Dec. 14, 2008, in Glendale, Ariz. The Cardinals recovered the fumble. (AP Photo/Ross D. Franklin)

NASHVILLE, TN - SEPTEMBER 28: Brian Robison #96 of the Minnesota Vikings runs on the field against the Tennessee Titans at LP Field on September 28, 2008 in Nashville, Tennessee. The Titans defeated the Vikings 30-17. (AP Photo/Tom Hauck)

Minnesota Vikings' Brian Robison #96 in action attempting to sack the Green Bay Packers Aaron Rodgers #12 during an NFL football game Sunday, Nov. 9, 2008 in Minneapolis. (AP Photo/Jim Mone)

Green Bay Packers quarterback Aaron Rodgers (12) fumbles as he is hit by Minnesota Vikings' Brian Robison (96) during the first half of an NFL football game Monday, Oct. 5, 2009, in Minneapolis. (AP Photo/Jim Mone)

Arizona Cardinals' Beanie Wells (26) tries to get past Minnesota Vikings' Brian Robison (52) in the third quarter during an NFL football game Sunday, Dec. 6, 2009, in Glendale, Ariz. The Cardinals defeated the Vikings 30-17. (AP Photo/Ross D. Franklin)

Minnesota Vikings' Brian Robison sacks Cincinnati Bengals' Carson Palmer during the first half of an NFL football game Sunday, Dec. 13, 2009, in Minneapolis. (AP Photo/Morry Gash)

Minnesota Vikings defensive end Brian Robison picks up a loose ball in an NFL football game against the Seattle Seahawks Sunday, Nov. 22, 2009 in Minneapolis. (AP Photo/Jim Mone)

Green Bay Packers quarterback Aaron Rodgers (12) fumbles as he is hit by Minnesota Vikings' Jared Allen (69) and Brian Robison (96) during the first half of an NFL football game Monday, Oct. 5, 2009, in Minneapolis. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison during the NFL team's training camp Monday, Aug. 2, 2010 in Mankato, Minn. (AP Photo/Jim Mone)

New England Patriots quarterback Tom Brady (12) gets the pass off as he is hit by Minnesota Vikings defensive end Brian Robison (96) during the NFL football game in Foxborough, Mass., Sunday, Oct. 31, 2010, won by the Patriots 28-18. (AP Photo/Robert E. Klein)

Minnesota Vikings defensive end Brian Robison (96) signals the Vikings recovered fumble during the NFL football game against the Buffalo Bills in Minneapolis Sunday, Dec. 5, 2010.(AP Photo/Andy King)

Minnesota Vikings defensive ends Brian Robison, left, and Everson Griffen during Ogranized Team Activities (OTA) NFL football workouts Wednesday, May 19, 2010 in Eden Prairie, Minn. (AP Photo/Jim Mone)

Brian Robison, former Texas Longhorn defensive lineman and current Minnesota Viking, prepares to throw the shot put during the Texas Relays in Austin, Tx., Saturday, April 3, 2010. (AP Photo/MIchael Thomas)

Minnesota Vikings defensive end Brian Robison #96 during an NFL football game against the San Francisco 49ers Sunday August 22, 2010 at Candlestick park in San Francisco California. The San Francisco 49ers defeated the Minnesota Vikings 15 - 10 in Pre-season week two action. (Ap Photo/ Bill Nichols)

Minnesota Vikings defensive end Brian Robison (96) in action during the second quarter of an NFL preseason football game in San Francisco, Sunday, Aug. 22, 2010. (AP Photo/Ben Margot)

Brian Robison, former Texas Longhorn defensive lineman and current Minnesota Viking, throws the shot put during the Texas Relays in Austin, Tx., Saturday, April 3, 2010. (AP Photo/MIchael Thomas)

Washington Redskins quarterback Donovan McNabb (5) is sacked by Minnesota Vikings defensive end Brian Robison during the second half of an NFL football game in Landover, Md., Sunday, Nov. 28, 2010. The Vikings defeated the Redskins 17-13. (AP Photo/Pablo Martinez Monsivais)

Minnesota Vikings defensive end Brian Robison during the second half of an NFL football game Sunday, Sept. 19, 2010, in Minneapolis. (AP Photo/Jim Mone)

New Orleans Saints' Drew Brees (9) throws while being pressured by Minnesota Vikings' Brian Robison (96) during the second half of an NFL football game Sunday, Dec. 18, 2011, in Minneapolis. (AP Photo/Genevieve Ross)

Arizona Cardinals quarterback Kevin Kolb, right, is chased down by Minnesota Vikings defensive end Brian Robison during the second half of an NFL football game Sunday, Oct. 9, 2011, in Minneapolis. The Vikings defeated the Cardinals 34-10. (AP Photo/Genevieve Ross)

Minnesota Vikings defensive end Brian Robison pressures Arizona Cardinals quarterback Kevin Kolb (4) during the first half of an NFL football game on Sunday, Oct. 9, 2011, in Minneapolis. Kolb fumbled on the play and Minnesota recovered. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison (96) leaves the field after an NFL game against the San Diego Chargers on September 11, 2011. The Chargers defeated the Vikings 24-17. (AP Photo/Kevin Terrell)

Minnesota Vikings defensive end Brian Robison reacts after tackling Detroit Lions quarterback Matthew Stafford, middle, during the first half an NFL football game Sunday, Sept. 25, 2011, in Minneapolis. (AP Photo/Jim Mone)

Green Bay Packers quarterback Aaron Rodgers (12) throws a pass over Minnesota Vikings defensive end Brian Robison during the first half of an NFL football game Sunday, Oct. 23, 2011, in Minneapolis. (AP Photo/Andy King)

Minnesota Vikings defensive end Brian Robison is seen on the field during the first half an NFL football game against the Detroit Lions Sunday, Sept. 25, 2011, in Minneapolis. (AP Photo/Genevieve Ross)

Minnesota Vikings defensive end Brian Robison (96) reacts to his sack of Washington Redskins quarterback Rex Grossman (8) during the first half of an NFL football game in Landover, Md., Saturday, Dec. 24, 2011. (AP Photo/Evan Vucci)

Minnesota Vikings defensive end Brian Robison celebrates after sacking Detroit Lions quarterback Matthew Stafford during the first half an NFL football game Sunday, Sept. 25, 2011, in Minneapolis. (AP Photo/Genevieve Ross)

El quarterback de los Chiefs de Kansas City Matt Cassel es derribado por Brian Robison de Minnesota el domingo 2 de octubre de 2011. (AP Foto/Ed Zurga)

FILE - In this Sept. 25, 2011, file photo, Detroit Lions quarterback Matthew Stafford, left, is sacked by Minnesota Vikings defensive end Brian Robison during the first half of an NFL football game in Minneapolis. Although they rallied to beat Minnesota in overtime, the Lions head into their matchup at Dallas on Sunday, Oct. 2 with one clear area of concern. Their offensive line allowed five sacks against the Vikings, and Detroit again struggled to run the ball. (AP Photo/Genevieve Ross, File)

Arizona Cardinals quarterback Kevin Kolb, right, is sacked by Minnesota Vikings defensive end Brian Robison, left, during the second half of an NFL football game on Sunday, Oct. 9, 2011, in Minneapolis. (AP Photo/Genevieve Ross)

Kansas City Chiefs quarterback Matt Cassel (7) looks for a receiver under pressure from Minnesota Vikings defensive end Brian Robison (96) during the first half of an NFL football game Sunday, Oct. 2, 2011 in Kansas City, Mo. (AP Photo/Charlie Riedel)

Detroit Lions quarterback Matthew Stafford, left, is sacked by Minnesota Vikings defensive end Brian Robison, right, during the first half an NFL football game on Sunday, Sept. 25, 2011, in Minneapolis. (AP Photo/Genevieve Ross)

Minnesota Vikings head coach Leslie Frazier, left, and defensive end Brian Robison visit during the NFL football team's practice Wednesday, Aug. 3, 2011 in Mankato, Minn. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison (96) shown during NFL football training camp, Monday, July 30, 2012, in Mankato, Minn. (AP Photo/Genevieve Ross)

Indianapolis Colts' Andrew Luck, center, is sacked by Minnesota Vikings' Erin Henderson, bottom, and Brian Robison, top, during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Chicago Bears quarterback Jay Cutler (6) is pursued by Minnesota Vikings linebacker Chad Greenway, left, and defensive end Brian Robison (96) in the second half of an NFL football game in Chicago, Sunday, Nov. 25, 2012. The Bears won 28-10. (AP Photo/Nam Y. Huh)

Detroit Lions quarterback Matthew Stafford (9) is sacked by Minnesota Vikings defensive end Brian Robison (96) during the second half at Ford Field in Detroit, Sunday, Sept. 30, 2012. (AP Photo/Rick Osentoski)

Indianapolis Colts quarterback Andrew Luck (12) is pressured by Minnesota Vikings' Brian Robison during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Minnesota Vikings defensive end Brian Robison (96) celebrates during the first quarter of an NFL football game against the St. Louis Rams Sunday, Dec. 16, 2012, in St. Louis. (AP Photo/Tom Gannam)

Chicago Bears quarterback Jay Cutler, right, runs from Minnesota Vikings defensive end Brian Robison during the first half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Minnesota Vikings defensive end Jared Allen, left, celebrates with teammate Brian Robison, right, after sacking Green Bay Packers quarterback Aaron Rodgers during the first half of an NFL football game Sunday, Dec. 30, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Arizona Cardinals quarterback John Skelton (19) is sacked by Minnesota Vikings defensive end Brian Robison, left, in the second half of an NFL football game in Minneapolis, Sunday, Oct. 21, 2012. (AP Photo/Andy King)

Tennessee Titans quarterback Matt Hasselbeck, center, scrambles between Minnesota Vikings defensive end Brian Robison, second from left, and defensive end Jared Allen (69) during the first half of an NFL football game on Sunday, Oct. 7, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Indianapolis Colts quarterback Andrew Luck (12) is chased by Minnesota Vikings' Brian Robison (96) during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Green Bay Packers' Aaron Rodgers throws with Minnesota Vikings' Brian Robison (96) rushing during the second half of an NFL football game Sunday, Dec. 2, 2012, in Green Bay, Wis. (AP Photo/Tom Lynn)

Green Bay Packers quarterback Aaron Rodgers, right, fumbles the ball as he is hit by Minnesota Vikings defensive end Brian Robison during the second half of an NFL football game Sunday, Dec. 30, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Minnesota Vikings defensive end Brian Robison (96) hits Arizona Cardinals quarterback John Skelton (19) in the first half of an NFL football game in Minneapolis, Sunday, Oct. 21, 2012. (AP Photo/Jim Mone)

St. Louis Rams quarterback Sam Bradford, left, is sacked for an 8-yard loss by Minnesota Vikings defensive end Brian Robison, right, during the first quarter of an NFL football game Sunday, Dec. 16, 2012, in St. Louis. (AP Photo/Seth Perlman)

Minnesota Vikings NFL football defensive end Brian Robison is shown during minicamp Thursday, June 21, 2012, in Eden Prairie, Minn. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison (96) is shown during Organized Team Activities (OTA) Wednesday, May 29, 2013 in Eden Prairie, Minn. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison (96) pressures Detroit Lions quarterback Matthew Stafford (9) during a NFL football game in Detroit, Tuesday, Sept. 10, 2013. (AP Photo/Paul Sancya)

Minnesota Vikings defensive end Brian Robison (96) is shown shown during Organized Team Activities (OTA) workouts for the NFL football team, Wednesday, June 5, 2013 in Eden Prairie, Minn. (AP Photo/Jim Mone)

Green Bay Packers' Matt Flynn throws while being pressured by Minnesota Vikings' Brian Robison during the second half of an NFL football game Sunday, Nov. 24, 2013, in Green Bay, Wis. The game ended in a tie, 26-26. (AP Photo/Morry Gash)

Minnesota Vikings defensive end Brian Robison, right, tackles Cleveland Browns quarterback Brian Hoyer (6) during the first half of an NFL football game Sunday, Sept. 22, 2013, in Minneapolis. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison (96), left, jumps to black as Pittsburgh Steelers quarterback Ben Roethlisberger (7), right, attempts to get a pass away during their NFL football game at Wembley Stadium, London, Sunday, Sept. 29, 2013. (AP Photo/Sang Tan)

Minnesota Vikings defensive end Brian Robison (96) sacks Cleveland Browns quarterback Brian Hoyer during the second half of an NFL football game Sunday, Sept. 22, 2013, in Minneapolis. (AP Photo/Jim Mone)

Detroit Lions quarterback Matthew Stafford throws a pass ahead of Minnesota Vikings defensive end Brian Robison, right, during the first half of an NFL football game, Sunday, Dec. 29, 2013, in Minneapolis. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison takes part in a drill at Winter Park in Eden Prairie, Minn., Wednesday, Oct. 9, 2013. Robison signed a four-year deal to remain with the team that drafted him. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison (96) sacks Cleveland Browns quarterback Brian Hoyer, left, during the second half of an NFL football game Sunday, Sept. 22, 2013, in Minneapolis. (AP Photo/Jim Mone)

Chicago Bears quarterback Josh McCown (12) rushes under pressure from Minnesota Vikings defensive end Brian Robison (96) during the second half of an NFL football game Sunday, Dec. 1, 2013, in Minneapolis. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison (96) celebrates with teammate Kevin Williams (93) after scoring a touchdown on a fumble recovery against the Chicago Bears during the first half of an NFL football game on Sunday, Sept. 15, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)

San Francisco 49ers quarterback Colin Kaepernick (7) passes as Minnesota Vikings defensive end Brian Robison (96) pursues during the first quarter of an NFL preseason football game in San Francisco, Sunday, Aug. 25, 2013. (AP Photo/Marcio Jose Sanchez)

Minnesota Vikings defensive end Brian Robison participates in a drill during NFL football training camp, Saturday, July 27, 2013, in Mankato, Minn. (AP Photo/Charlie Neibergall)

Baltimore Ravens quarterback Joe Flacco (5) rushes the ball as he is chased by Minnesota Vikings outside linebacker Chad Greenway (52) and defensive end Brian Robison, left, in the first half of an NFL football game, Sunday, Dec. 8, 2013, in Baltimore. (AP Photo/Gail Burton)

Detroit Lions quarterback Matthew Stafford, left, is sacked by Minnesota Vikings defenders Jared Allen (69) and Brian Robison (96) during the first half of an NFL football game, Sunday, Dec. 29, 2013, in Minneapolis. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison (96) pressures Detroit Lions quarterback Matthew Stafford (9) during the third quarter of an NFL football game against the Detroit Lions at Ford Field in Detroit, Sunday, Sept. 8, 2013. (AP Photo/Paul Sancya)

Minnesota Vikings defensive end Brian Robison (96) runs in a touchdown after recovering a fumble by Chicago Bears quarterback Jay Cutler, right, during the first half of an NFL football game on Sunday, Sept. 15, 2013, in Chicago. Vikings' Everson Griffen (97) runs behind Robison. (AP Photo/Charles Rex Arbogast)

Minnesota Vikings defensive end Brian Robison speaks with reporters before NFL football practice at the team's training facility, Wednesday, Dec. 3, 2014, in Eden Prairie, Minn. Robison showed off his newly shorn look Wednesday, after deciding two days ago to get it cut for charity. He donated his hair to Locks of Love, a nonprofit organization that provides wigs to children with long-term hair loss from any type of medical diagnosis. (AP Photo/Dave Campbell)

Minnesota Vikings head coach Mike Zimmer, left, talks with defensive ends Everson Griffen (97) and Brian Robison (96) during an NFL football training camp practice, Friday, Aug. 1, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)

Minnesota Vikings defensive end Brian Robison (96) celebrates after a sack during the second half of an NFL football game against the Green Bay Packers, Sunday, Nov. 23, 2014, in Minneapolis. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison (96) waits during a timeout during the first half of an NFL football game against the Chicago Bears, Sunday, Dec. 28, 2014, in Minneapolis. (AP Photo/Jim Mone)

Minnesota Vikings head coach Mike Zimmer talks with defensive end Brian Robison (96) during NFL football minicamp in Eden Prairie, Minn., Thursday, June 19, 2014. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison stands on the field before an NFL football game against the New York Jets, Sunday, Dec. 7, 2014, in Minneapolis. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison runs onto the field before an NFL football game against the New York Jets, Sunday, Dec. 7, 2014, in Minneapolis. (AP Photo/Alex Brandon)

Minnesota Vikings defensive end Brian Robison signs autographs for fans during NFL football training camp, Friday, July 25, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)

Minnesota Vikings defensive end Brian Robison looks to make a tackle during an NFL football training camp practice, Friday, Aug. 1, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)

Minnesota Vikings defensive end Brian Robison walks to the field before an NFL football training camp practice, Wednesday, July 30, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)

Minnesota Vikings defensive end Brian Robison (96) sacks Buffalo Bills quarterback Kyle Orton (18) during the first half of an NFL football game Sunday, Oct. 19, 2014, in Orchard Park, N.Y. (AP Photo/Gary Wiepert)

Minnesota Vikings defensive end Brian Robison walks to the field before an NFL football training camp practice, Saturday, Aug. 2, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)

St. Louis Rams quarterback Austin Davis, right, throws as he is hit by Minnesota Vikings defensive end Brian Robison during the third quarter an NFL football game Sunday, Sept. 7, 2014, in St. Louis. (AP Photo/L.G. Patterson)

Minnesota Vikings defensive end Brian Robison carries his daughter before an NFL football game against the Atlanta Falcons, Sunday, Sept. 28, 2014, in Minneapolis. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison, center, stretches with teammates during NFL football training camp, Thursday, July 31, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)

Detroit Lions quarterback Matthew Stafford (9) runs the ball chased by Minnesota Vikings defensive end Brian Robison (96) during an NFL football game at Ford Field in Detroit, Sunday, Dec. 14, 2014. (AP Photo/Rick Osentoski)

Minnesota Vikings defensive end Brian Robison (96) and defensive end Everson Griffen (97) stand on the field during NFL football training camp, Monday, July 28, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)

Miami Dolphins wide receiver Jarvis Landry (14) runs past Minnesota Vikings defensive end Brian Robison (96) during the first half of an NFL football game, Sunday, Dec. 21, 2014, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)

Buffalo Bills quarterback Kyle Orton (18) is hit by Minnesota Vikings defensive end Brian Robison (96) during the first half of an NFL football game Sunday, Oct. 19, 2014, in Orchard Park, N.Y. (AP Photo/Bill Wippert)

Minnesota Vikings defensive end Brian Robison (96) reacts after making a tackle during the second half of an NFL football game against the Green Bay Packers, Sunday, Nov. 23, 2014, in Minneapolis. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive ends Everson Griffen, left, and Brian Robison walk to the field before an NFL football training camp practice, Saturday, Aug. 2, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)

Minnesota Vikings defensive end Brian Robison, right, tries to get around the block by guard Charlie Johnson during an NFL football training camp practice, Friday, Aug. 1, 2014, in Mankato, Minn. (AP Photo/Charlie Neibergall)

Detroit Lions quarterback Matthew Stafford (9) is pressured by Minnesota Vikings defensive end Brian Robison (96) during an NFL football game, Sunday, Oct. 25, 2015, in Detroit. (AP Photo/Rick Osentoski)

Minnesota Vikings defensive end Brian Robison (96) rushes the quarterback during an NFL football game against the New York Giants on Sunday, Dec. 27, 2015, in Minneapolis. Minnesota won 49-17. (Aaron M. Sprecher via AP)

Minnesota Vikings defensive end Brian Robison takes a break during the NFL team's practice, Thursday, June 4, 2015, in Eden Prairie, Minn. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison, right, hugs teammate defensive end Everson Griffen as they report to an NFL football training camp On the campus of Minnesota State University Saturday, July 25, 2015, in Mankato, Minn. (AP Photo/Charles Rex Arbogast)

Minnesota Vikings defensive end Brian Robison (96) takes the field in the first half of an NFL football game against the Seattle Seahawks Sunday, Dec. 6, 2015 in Minneapolis. (AP Photo/Ann Heisenfelt)

Minnesota Vikings head coach Mike Zimmer, right, listens to defensive end Brian Robison during practice at an NFL football training camp on the campus of Minnesota State University, Sunday, July 26, 2015, in Mankato, Minn. (AP Photo/Charles Rex Arbogast)

Minnesota Vikings defensive end Brian Robison (96) celebrates his fumble recovery in front of Kansas City Chiefs center Mitch Morse (61) during the second half of an NFL football game, Sunday, Oct. 18, 2015, in Minneapolis. The Vikings won 16-10. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison (96) celebrates after a play during an NFL football game against the New York Giants on Sunday, Dec. 27, 2015, in Minneapolis. Minnesota won 49-17. (Aaron M. Sprecher via AP)

Minnesota Vikings defensive end Brian Robison (96) leaves the field after NFL football minicamp in Eden Prairie, Minn., Thursday, June 18, 2015. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison, raises his hands to the cheers of fans as he reports to an NFL football training camp on the campus of Minnesota State University Saturday, July 25, 2015, in Mankato, Minn. (AP Photo/Charles Rex Arbogast)

Minnesota Vikings defensive end Brian Robison (96) rushes as Dallas Cowboys quarterback Tony Romo (9) watches a pass during an NFL preseason football game at AT&T Stadium on Saturday, August 29, 2015 in Arlington, Texas. (Peter Read Miller via AP)

Minnesota Vikings defensive line coach Andre Patterson embraces defensive end Brian Robison (96) before an NFL game against the San Francisco 49ers at Levi's Stadium on September 14, 2015. The 49ers defeated the Vikings 20-3. (Kevin Terrell via AP)

Minnesota Vikings defensive end Everson Griffen (97) and defensive end Brian Robison (96) make their way onto the field to face the Pittsburgh Steelers at Tom Benson Hall of Fame Stadium in Canton, Ohio on Aug. 9, 2015. (AP Photo/Johnny Vy)

Minnesota Vikings Brian Robison(96) during an NFL football game against theDetroit Lions at TFC Bank Stadium on September 20, 2015.

(Photo Tom DiPace via AP)

Minnesota Vikings defensive end Brian Robison (96) padses during an NFL game against the San Francisco 49ers at Levi's Stadium on September 14, 2015. The 49ers defeated the Vikings 20-3. (Kevin Terrell via AP)

Minnesota Vikings defensive end Brian Robison (96) attempts block the punt of San Diego Chargers punter Mike Scifres (5) in the first half of an NFL football game in Minneapolis, Sunday, Sept. 27, 2015. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison participates in practice at an NFL football training camp on the campus of Minnesota State University Wednesday, July 29, 2015, in Mankato, Minn. (AP Photo/Charles Rex Arbogast)

Seattle Seahawks wide receiver Tyler Lockett (16) is knocked out of bounds after a catch byMinnesota defensive end Brian Robison (96) in action Sunday December 6, 2015 in Minneapolis, Minn. (Damian Strohmeyer via AP)

Arizona Cardinals wide receiver Larry Fitzgerald (11) talks with Minnesota Vikings defensive end Brian Robison (96) during the first half of an NFL football game, Thursday, Dec. 10, 2015, in Glendale, Ariz. (AP Photo/Rick Scuteri)

St. Louis Rams quarterback Nick Foles (5) is pressured by Minnesota Vikings defensive end Brian Robison (96) during the first half of an NFL football game, Sunday, Nov. 8, 2015, in Minneapolis. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison (96) celebrates bringing down Detroit Lions quarterback Matthew Stafford (9) in the second half of an NFL football game in Minneapolis, Sunday, Sept. 20, 2015. (AP Photo/Ann Heisenfelt)

Minnesota Vikings defensive end Brian Robison celebrates against the Detroit Lions in the first half of an NFL football game in Minneapolis, Sunday, Sept. 20, 2015. (AP Photo/Ann Heisenfelt)

Sound man Bernie Beaudry runs into the path of Minnesota Vikings players Linval Joseph and Brian Robison (96) during introductions of players before an NFL football game against the Arizona Cardinals Sunday, Nov. 20, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

Minnesota Vikings defensive end Brian Robison (96) goes through drills during the first day of the NFL teams training camp at Mankato State University in Mankato, Minn. on Friday, July, 29, 2016.(AP Photo/Andy Clayton-King)

Minnesota Vikings defensive end Brian Robison (96), center, Minnesota Vikings outside linebacker Chad Greenway (52) and Minnesota Vikings cornerback Trae Waynes (26) watch during the team's NFL football training camp at Mankato State University in Mankato, Minn. on Saturday, July, 30, 2016.(AP Photo/Andy Clayton-King)

Minnesota Vikings defensive end Brian Robison (96) and Minnesota Vikings defensive end Everson Griffen (97) during the first day of the team's NFL football training camp at Mankato State University in Mankato, Minn. on Friday, July, 29, 2016.(AP Photo/Andy Clayton-King)

Detroit Lions quarterback Matthew Stafford throws a pass in front of Minnesota Vikings defensive end Brian Robison (96) during the second half of an NFL football game Sunday, Nov. 6, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

Minnesota Vikings defensive end Brian Robison, left, knocks the ball away from Houston Texans quarterback Brock Osweiler, right, during the second half of an NFL football game Sunday, Oct. 9, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

Sound man Bernie Beaudry runs into the path of Minnesota Vikings players Linval Joseph and Brian Robison (96) during introductions of players before an NFL football game against the Arizona Cardinals Sunday, Nov. 20, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

Minnesota Vikings defensive end Brian Robison (96), Minnesota Vikings defensive end Everson Griffen (97) and Minnesota Vikings cornerback Antone Exum (32) during the first day of the team's NFL football training camp at Mankato State University in Mankato, Minn. on Friday, July, 29, 2016.(AP Photo/Andy Clayton-King)

Minnesota Vikings defensive end Brian Robison (96) celebrates during an NFL football game against the Dallas Cowboys on Thursday, Dec. 1, 2016, in Minneapolis. Dallas won 17-15. (Aaron M. Sprecher via AP)

Minnesota Vikings defensive end Brian Robison (96) sacks Houston Texans quarterback Brock Osweiler (17) during the first half of an NFL football game Sunday, Oct. 9, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

Minnesota Vikings defensive end Brian Robison (96) runs onto the field carrying an American flag prior to an NFL football game against the Detroit Lions on Sunday, Nov. 6, 2016 in Minneapolis. Detroit won 22-16 in overtime. (Peter Read Miller via AP)

Minnesota Vikings defensive end Brian Robison (96) celebrates after sacking Jacksonville Jaguars quarterback Blake Bortles (5) during the first half of an NFL football game, Sunday, Dec. 11, 2016, in Jacksonville, Fla. (AP Photo/Phelan M. Ebenhack)

Tennessee Titans quarterback Marcus Mariota (8) passes as he is pressured by Minnesota Vikings defensive end Brian Robison (96) in the first half of an NFL football game Sunday, Sept. 11, 2016, in Nashville, Tenn. (AP Photo/James Kenney)

Minnesota Vikings defensive end Brian Robison (96) celebrates during an NFL football game against the New York Giants on Monday, Oct. 3, 2016, in Minneapolis. Minnesota won 24-10. (Aaron M. Sprecher via AP)

Minnesota Vikings defensive lineman Brian Robison (96) holds his son before an NFL game against the Houston Texans on Sunday, Oct. 9, 2016, in Minneapolis, Minn. The Vikings won the game, 31-13. (Greg Trott via AP)

Minnesota Vikings defensive end Brian Robison (96) sacks Jacksonville Jaguars quarterback Blake Bortles (5) as Vikings defensive end Danielle Hunter (99) comes in to help during the first half of an NFL football game, Sunday, Dec. 11, 2016, in Jacksonville, Fla. (AP Photo/Phelan M. Ebenhack)

Minnesota Vikings defensive end Brian Robison (96) during the NFL regular season football game against the Chicago Bears on Monday, Oct. 31, 2016 in Chicago. The Bears won, 20-10. (Ric Tapia via AP)

Washington Redskins quarterback Kirk Cousins (8) throws the ball as offensive tackle Morgan Moses (76) attempts to block Minnesota Vikings defensive end Brian Robison (96) during an NFL football game between the Minnesota Vikings and Washington Redskins, Sunday, Nov. 12, 2017, in Landover, Md. (AP Photo/Mark Tenally)

Minnesota Vikings defensive end Brian Robison (96) and defensive tackles Tom Johnson (92) and Shamar Stephen (93) take part in calisthenics during NFL football practice Wednesday, May 24, 2017, in Eden Prairie, Minn. (AP Photo/Jim Mone)

Minnesota Vikings linebacker Emmanuel Lamur (59) and defensive end Brian Robison (96) celebrate after forcing a turnover during the first quarter of an NFL football game against the Cleveland Browns at Twickenham Stadium in London, Sunday Oct. 29, 2017. (AP Photo/Matt Dunham)

Minnesota Vikings defensive end Brian Robison (left) and Carolina Panthers running back Fozzy Whittaker (43) pose for a photo after a jersey swap following an NFL football game on Sunday, Dec. 10, 2017, in Charlotte, N.C. (NFL Photos via AP)

Minnesota Vikings defensive end Brian Robison (96) leads his teammates out of the locker room prior to an NFL football game on Saturday, December 23, 2017 in Green Bay. The Vikings beat the Packers 16-0. (Todd Rosenberg via AP)

Minnesota Vikings defensive end Brian Robison (96) rushes during NFL football training camp Friday, July 28, 2017, in Mankato, Minn. (AP Photo/Andy Clayton-King)

Minnesota Vikings defensive players including Anthony Barr (55), Everson Griffen and Brian Robison (96) walk to practice during NFL football training camp Thursday, July 27, 2017, in Mankato, Minn. (AP Photo/Andy Clayton-King)

Minnesota Vikings defensive end Brian Robison celebrates after a sack during the first half of an NFL football game against the Cincinnati Bengals, Sunday, Dec. 17, 2017, in Minneapolis. (AP Photo/Bruce Kluckhohn)

;Green Bay Packers quarterback Brett Hundley (7) is hit by Minnesota Vikings defensive end Brian Robison (96) after throwing in the second half of an NFL football game in Minneapolis, Sunday, Oct. 15, 2017. Minnesota won 23-10. (AP Photo/Jim Mone)

Minnesota Vikings defensive end Brian Robison celebrates after sacking Chicago Bears quarterback Mitchell Trubisky during the second half of an NFL football game, Sunday, Dec. 31, 2017, in Minneapolis. (AP Photo/Bruce Kluckhohn)

Minnesota Vikings cornerback Terence Newman (23) celebrates with teammate Brian Robison (96) after intercepting a pass during the second half of an NFL football game against the Cincinnati Bengals, Sunday, Dec. 17, 2017, in Minneapolis. (AP Photo/Bruce Kluckhohn)

Minnesota Vikings defensive end Brian Robison (96) sacks Chicago Bears quarterback Mitchell Trubisky (10) during the second half of an NFL football game, Sunday, Dec. 31, 2017, in Minneapolis. (AP Photo/Bruce Kluckhohn)

Minnesota Vikings defensive end Brian Robison (96) rushes during NFL football training camp Friday, July 28, 2017, in Mankato, Minn. (AP Photo/Andy Clayton-King)

FILE - In this Sept. 17, 2017, file photo, Pittsburgh Steelers quarterback Ben Roethlisberger (7) is sacked by Minnesota Vikings defensive end Everson Griffen (97) during the first half of an NFL football game, in Pittsburgh. The Vikings defensive end joined stud pass-rushers Dwight Freeney and Robert Mathis as the only three players with a sack in each of his first eight games of the season since the league began tracking the stat in 1982. Griffen talks like a chunk of his 10 sacks belong to fellow linemen Daniell Hunter, Brian Robison, Tom Johnson and Linval Joseph. “I can't do it without my defensive line,” Griffen said. (AP Photo/Keith Srakocic, File)

An image from the Dec. 1, 2016 home game against the Dallas Cowboys. The Vikings lost 15-17.

An image from the Jan. 14, 2018 divisional playoff game against the New Orleans Saints. The Vikings won 29-24.

An image from a 2016 Minnesota Vikings practice.

An image from the Dec. 31, 2017 regular season home game against the Chicago Bears. The Vikings won 23-10.

An image from the Jan. 14, 2018 divisional playoff game against the New Orleans Saints. The Vikings won 29-24.

An image from the Oct. 15, 2017 regular season home game against the Green Bay Packers. The Vikings won 23-10.

An image from the Dec. 11, 2016 away game against the Jacksonville Jaguars. The Vikings won 25-16.

An image from the Dec. 31, 2017 regular season home game against the Chicago Bears. The Vikings won 23-10.

An image from the Oct. 22, 2017 regular season home game against the Baltimore Ravens. The Vikings won 24-16.

An image from the Oct. 31, 2016 away game against the Chicago Bears. The Vikings lost 10-20.

An image from the Sept. 17, 2017 regular season away game against the Pittsburgh Steelers. The Vikings lost 9-26.

An image from the Oct. 15, 2017 regular season home game against the Green Bay Packers. The Vikings won 23-10.

An image from the Oct. 1, 2017 regular season home game against the Detroit Lions. The Vikings lost 7-14.

An image from the Dec. 17, 2017 regular season home game against the Cincinnati Bengals. The Vikings won 34-7 to clinch the NFC North.

An image from the Sept. 17, 2017 regular season away game against the Pittsburgh Steelers. The Vikings lost 9-26.

An image from the Jan. 1, 2017 home game against the Chicago Bears. The Vikings won 38-10.

An image from the Oct. 22, 2017 regular season home game against the Baltimore Ravens. The Vikings won 24-16.

An image from the Dec. 23, 2017 regular season away game against the Green Bay Packers. The Vikings won 16-0.

An image from the Dec. 1, 2016 home game against the Dallas Cowboys. The Vikings lost 15-17.

An image from the Sept. 25, 2017 regular season home game against the Tampa Bay Buccaneers. The Vikings won 34-17.

An image from the Aug. 18, 2017 preseason away game against the Seattle Seahawks. The Vikings lost 13-20.

An image from the Aug. 18, 2017 preseason away game against the Seattle Seahawks. The Vikings lost 13-20.

An image from the Sept. 11, 2017 home game against the New Orleans Saints. The Vikings won 29-19.

An image from the Nov. 6, 2016 home game against the Detroit Lions. The Vikings lost 16-22 in overtime.

An image from the Dec. 31, 2017 regular season home game against the Chicago Bears. The Vikings won 23-10.

An image from the Nov. 23, 2017 regular season away game against the Detroit Lions. The Vikings won 30-23.

An image from the Nov. 6, 2016 home game against the Detroit Lions. The Vikings lost 16-22 in overtime.

An image from the Sept. 11, 2017 home game against the New Orleans Saints. The Vikings won 29-19.

An image from the Dec. 31, 2017 regular season home game against the Chicago Bears. The Vikings won 23-10.

An image from the Jan. 1, 2017 home game against the Chicago Bears. The Vikings won 38-10.

An image from the Aug. 18, 2017 preseason away game against the Seattle Seahawks. The Vikings lost 13-20.

An image from the Oct. 9, 2017 regular season away game against the Chicago Bears. The Vikings won 20-17.

An image from the Oct. 31, 2016 away game against the Chicago Bears. The Vikings lost 10-20.

An image from the Sept. 25, 2016 regular season away game against the Carolina Panthers. The Vikings won 22-10.An image from the Sept. 25, 2016 regular season away game against the Carolina Panthers. The Vikings won 22-10.

An image from the Oct. 9, 2016 home game against the Houston Texans. The Vikings won 31-13.

An image from the Nov. 6, 2016 home game against the Detroit Lions. The Vikings lost 16-22 in overtime.

An image from the Oct. 1, 2017 regular season home game against the Detroit Lions. The Vikings lost 7-14.

An image from the Dec. 17, 2017 regular season home game against the Cincinnati Bengals. The Vikings won 34-7 to clinch the NFC North.

An image from the Nov. 13, 2016 away game against the Washington Redskins. The Vikings lost 20-26.

An image from the Dec. 23, 2017 regular season away game against the Green Bay Packers. The Vikings won 16-0.

An image from the Dec. 1, 2016 home game against the Dallas Cowboys. The Vikings lost 15-17.

An image from the Oct. 15, 2017 regular season home game against the Green Bay Packers. The Vikings won 23-10.

An image from the Oct. 22, 2017 regular season home game against the Baltimore Ravens. The Vikings won 24-16.

An image from the Sept. 11, 2016 away game against the Tennessee Titans. The Vikings won 25-16.

An image from the Sept. 25, 2017 regular season home game against the Tampa Bay Buccaneers. The Vikings won 34-17.

Players prepare before the August 28, 2016 preseason home game against the San Diego Chargers. The Vikings won 23-10.

An image from the Jan. 14, 2018 divisional playoff game against the New Orleans Saints. The Vikings won 29-24.

An image from the Nov. 20, 2016 home game against the Arizona Cardinals. The Vikings won 30-24.

An image from the Sept. 17, 2017 regular season away game against the Pittsburgh Steelers. The Vikings lost 9-26.

An image from the Sept. 25, 2017 regular season home game against the Tampa Bay Buccaneers. The Vikings won 34-17.

An image from the Oct. 15, 2017 regular season home game against the Green Bay Packers. The Vikings won 23-10.

An image from the Nov. 20, 2016 home game against the Arizona Cardinals. The Vikings won 30-24.