Texas running back Chris Warren runs the 40-yard dash. Photo credit: Michael Conroy/AP Photo

Alabama running back Bo Scarbrough runs a drill. Photo credit: Darron Cummings/AP Photo

Washington running back Lavon Coleman runs the 40-yard dash. Photo credit: Darron Cummings/AP Photo

Western Michigan running back Donnie Ernsberger runs a drill. Photo credit: Michael Conroy/AP Photo

Arizona State running back Demario Richard runs a drill. Photo credit: Michael Conroy/AP Photo

MIami running back Mark Walton runs a drill. Photo credit: Michael Conroy/AP Photo

Oklahoma offensive lineman Orlando Brown runs a drill.  Photo credit:Michael Conroy/AP Photo

Notre Dame offensive lineman Quenton Nelson is tested in the broad jump. Photo credit: Logan Bowles/AP Photo

Oregon Offensive lineman Tyrell Crosby runs the 40-yard dash. Photo credit:Darron Cummings/AP Photo

UCLA offensive lineman Kolton Miller is tested in the vertical jump. Photo credit: Michael Conroy/AP Photo

Humboldt State offensive lineman Alex Cappa runs the 40-yard dash. Photo credit: Michael Conroy/AP Photo

Mississippi State offensive lineman Martinas Rankin takes part in the bench press test. Photo credit: Gregory Payan/AP Photo

West Georgia offensive lineman Des Harrison runs a drill. Photo credit: Michael Conroy/AP Photo

Notre Dame offensive lineman Mike McGlinchey is tested in the vertical jump. Photo credit: Darron Cummings/AP Photo

UTEP offensive lineman Will Hernandez runs a drill. Photo credit: Michael Conroy/AP Photo

Michigan State offensive lineman Brian Allen runs a drill. Photo credit: Michael Conroy/AP Photo

Arizona State offensive lineman Sam Jones runs a drill. Photo credit: Michael Conroy/AP Photo

Penn State RB Saquon Barkley runs the 40-yard dash. Photo credit: Michael Conroy/AP Photo

USC running back Ronald Jones runs the 40-yard dash. Photo credit: Michael Conroy/AP Photo

LSU running back Derrius Guice runs the 40-yard dash. Photo credit: Michael Conroy/AP Photo

Penn State running back Saquon Barkley is tested in the vertical jump. Photo credit: Darron Cummings/AP Photo

San Diego State running back Nick Bawden and North Texas running back Jeff Wilson. Photo credit: Logan Bowles/AP Photo

Tennessee running back John Kelly is tested in the bench press. Photo credit Gregory Payan/AP Photo

Colorado State punter Hayden Hunt punts the ball in front of scouts. Photo credit: Aaron M. Spreecher/AP Photo

Miami kicker MIke Badgley runs the 40-yard dash. Photo credit: Michael Conroy/AP Photo

Alabama kicker JK Scott runs the 40-yard dash. Photo credit: Michael Conroy/AP Photo

Tennessee kicker Trevor Daniel runs the 40-yard dash. Photo credit: Michael Conroy/AP Photo

Miami kicker Mike Badgley runs the 40-yard dash. Photo credit: Michael Conroy/AP Photo

Arkansas punter Toby Baker punts the ball in front of scouts. Photo credit: Aaron M. Spreecher/AP Photo