Wide receivers, quarterbacks and running backs participated Saturday 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 agility and receiving drills like "the gauntlet" and running various pass routes.
This year's crop of receivers has been said to be "[very good](http://www.vikings.com/search-results?q=devante parker&Go.x=0&Go.y=0)," but maybe not as strong as the 2014 class that had multiple members make an immediate impact.
NFL Media analyst Mike Mayock considers Amari Cooper, DeVante Parker (a college teammate of Vikings QB Teddy Bridgewater at Louisville) and Kevin White "consensus top-20 picks." White turned heads by running the 40-yard dash in 4.35 seconds (tied for third fastest among receivers). He also tied for the positional lead in the bench press with 23 reps.
What do those performances mean?
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 concluded the second highest correlation relation between top performances and starting receivers of any offensive position.
Villiotti also broke down which drills were most important for each position and determined the broad jump and vertical jump have stronger connections with starting receivers than the 40-yard dash. Chris Conley of Georgia performed well in all three events, leaping a whopping 45 inches in the vertical and broad jumping 11 feet, 7 inches (tied with Jamie Collins in 2013 for best at any position).
J.J. Nelson, UAB, 4.29 seconds
Phillip Dorsett, Miami, 4.33
Chris Conley, Georgia, 4.35
(tied) Kevin White, West Virginia, 4.35
(tied) Tyler Lockett, Kansas State, 4.40
Sammie Coates, Auburn, 23 reps
(tied) Geremy Davis, Connecticut, 23
(tied) Kevin White, West Virginia, 23
Chris Conley, Georgia, 18
Da'Ron Brown, Northern Illinois, 17
(tied) Devin Funchess, 17
(tied) Donatella Luckett, Harding, 17
(tied) DeVante Parker, Louisville, 17
(tied) Ezell Ruffin, San Diego State, 17
Chris Conley, Georgia, 45.0 inches
Jaelen Strong, Arizona State, 42.0
Kenny Bell, Nebraska, 41.5
Sammie Coates, Auburn, 41.0
(tied) Rannell Hall, Central Florida, 41.0
Chris Conley, Georgia, 11 feet, 7 inches
Rannell Hall, Central Florida, 11-0
Sammie Coates, Auburn, 10-11
Kenny Bell, Nebraska, 10-09
J.J. Nelson, UAB, 10-07
Justin Hardy, East Carolina, 6.63 seconds
Mario Alford, West Virginia, 6.64
Kenny Bell, Nebraska, 6.66
Phillip Dorsett, Miami, 6.70
Amari Cooper, Alabama 6.71
Amari Cooper, Alabama, 3.98
Sammie Coates, Auburn, 4.06
Mario Alford, West Virginia, 4.07
(tied) Tyler Lockett, Kansas State, 4.07
Tre McBride, William & Mary, 4.08
Tyler Lockett, Kansas State, 11.14
Mario Alford, West Virginia, 11.22
Geremy Davis, Connecticut, 11.28
Darren Waller, Georgia Tech, 11.35
Tony Lippett, Michigan State, 11.44