View photos from Monday's Scouting Combine workouts.
Cornerback and safeties participated Sunday in timing and testing drills as part of the annual evaluation of more than 300 draft-eligible prospects by scouts and coaches from all 32 NFL teams.
There are drills that use easy to understand metrics like how fast a player can run 40 yards in a straight line or how many times he can bench press 225 pounds, and there are also drills designed to reveal a player's agility and change of direction.
NFL Media analyst Mike Mayock said he uses the on-field information gathered at the combine as a cross check. The info can further validate an opinion he's formed by watching game film, or give him cause to review more tape.
Teams most likely take a similar approach when looking at defensive players, assessing traits to consider the best ways a defensive back can help a unit. Teams like a blend of size and speed on the outside because of the prevalence of large receivers, and place emphasis on finding players who can defend the slot with quickness.
Trae Waynes, who was the top-rated cornerback by Mayock before the combine, further boosted his stock by running the 40-yard dash in 4.31 seconds.
Gaudy numbers posted by Connecticut's Byron Jones stole the show Monday. He broad jumped 12 feet, 3 inches, the greatest distance in the event in more than 10 years, and shocking fellow competitors who were watching in the background.
Jones also recorded a leap of 44.5 inches in the vertical, which was one-half inch below Georgia receiver Chris Conley's effort on Saturday.
"You are now a verified freak, Mr. Jones," Mayock said after Jones' jumps.
Jones was ranked as the 50th overall prospect before the combine by NFL Media analyst Daniel Jeremiah. Will his soaring prompt the same for his draft stock?
Tony Villiotti processed numbers to determine which measurable drill was most important to each position for nationalfootballpost.com. Villiotti looked at players who have started "one full season" and whether or not they were top performers among their position. He found that top performances at the combine have the strongest relationship to players who are starting cornerbacks than that of any other position.
The events Villiotti found most relevant to cornerbacks were the 40-yard dash and 3-cone drill, and the broad jump and vertical jump had the least strong relationship.
Trae Waynes, Michigan State, 4.31 seconds
Ronald Darby, Florida State, 4.38
Charles Gaines, Louisville, 4.44
(tied) Doran Grant, Ohio State, 4.44
(tied) Craig Mager, Texas State, 4.44
(tied) Josh Shaw, USC, 4.44
D'Joun Smith, Florida Atlantic, 4.45
Josh Shaw, USC, 26
Doran Grant, Ohio State, 21
Justin Coleman, Tennessee, 20
Steven Nelson, Oregon State, 19
(tied) Trae Waynes, Michigan State, 19
Byron Jones, Connecticut, 44.5 inches
Ronald Darby, Florida State, 41.5
Kevin Johnson, Wake Forest, 41.5
Alex Carter, Stanford, 40.0
P.J. Williams, Florida State, 40.0
Byron Jones, Connecticut, 12 feet, 3 inches
P.J. Williams, Florida State, 11-0
Kevin Johnson, Wake Forest, 10-10
(tied) Craig Mager, Texas State, 10-10
(tied) Bobby McCain, Memphis, 10-10
(tied) Josh Shaw, USC, 10-10
Ronald Darby, Florida State, 10-9
Justin Coleman, Tennessee, 6.61 seconds
Jalen Collins, LSU, 6.77
Byron Jones, Connecticut, 6.78
Kevin Johnson, Wake Forest, 6.79
Bobby McCain, Memphis, 6.80
Garry Peters, Clemson, 6.80
Bobby McCain, Memphis, 3.82 seconds
Kevin Johnson, Wake Forest, 3.89
Byron Jones, Connecticut, 3.94
Tye Smith, Towson, 3.96
Justin Coleman, Tennessee, 3.98
Byron Jones, Connecticut, 10.98 seconds
Garry Peters, Clemson, 11.10
Justin Coleman, Tennessee, 11.21
Bobby McCain, Memphis, 11.22
Marcus Peters, Washington, 11.26