Vanderbilt defensive back Sean Richardson does the vertical jump during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Michigan State defensive back Trent Robinson during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Scouts time participants during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Oregon defensive back Cliff Harris reacts during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Michigan State defensive back Trent Robinson does the broad jump during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

LSU defensive back Morris Claiborne reacts during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

South Carolina defensive back Stephon Gilmore during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Central Florida defensive back Josh Robinson during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

North Alabama defensive back Janoris Jenkins during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Louisiana-Lafayette defensive back Dwight Bentley runs the 40 yard dash at the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Defensive backs receive instruction before workouts at the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Texas A&M defensive back Coryell Judie during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Maine defensive back Jerron McMillian before workouts at the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

LSU defensive back Ron Brooks runs the 40 yard dash at the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

LSU defensive back Morris Claiborne during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Montana defensive back Trumaine Johnson during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Clemson defensive lineman Brandon Thompson during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

North Alabama defensive back Janoris Jenkins runs the 40 yard dash at the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 28 in Indianapolis, Ind. (Ben Liebenberg/NFL)

TCU linebacker Tank Carder during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Linebackers run drills during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Mychal Kendricks during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Linebackers receive instructions on drills during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Arizona State linebacker Vontaze Burfict during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

North Carolina linebacker Zach Brown during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

West Virginia defensive lineman Bruce Irvin during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

North Carolina defensive lineman Quinton Coples during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

South Carolina defensive lineman Melvin Ingram during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

West Virginia defensive lineman Bruce Irvin during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

South Carolina defensive lineman Melvin Ingram during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

South Carolina defensive lineman Melvin Ingram during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

West Virginia defensive lineman Bruce Irvin during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Troy defensive lineman Jonathan Massaquoi during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

North Carolina defensive lineman Quinton Coples runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

West Virginia defensive lineman Bruce Irvin during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Pittsburgh defensive lineman Chas Alecxih runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

North Carolina defensive lineman Quinton Coples during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Defensive lineman stretch during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Oklahoma defensive lineman Ronnell Lewis before working out during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Defensive lineman stretch during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

South Carolina defensive lineman Melvin Ingram runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

West Virginia defensive lineman Bruce Irvin runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

North Carolina State defensive lineman Markus Kuhn runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 27 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Temple running back Bernard Pierce runs a drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Tennessee running back Tauren Poole runs a drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Ohio State running back Daniel Herron runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Washington running back Chris Polk runs a drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Michigan State running back Edwin Baker runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Virginia Tech running back David Wilson runs a drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Maryland running back Davin Meggett runs a drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Arkansas wide receiver Greg Childs catches a pass during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Virginia Tech wide receiver Daniel Coale during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Stanford quarterback Andrew Luck during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Louisiana State quarterback Jordan Jefferson runs the 3 cone drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Michigan State quarterback Kirk Cousins runs the 3 cone drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Stanford quarterback Andrew Luck runs the 3 cone drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Stanford quarterback Andrew Luck before performing the 3 cone drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

San Diego State quarterback Ryan Lindley runs the 3 cone drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Sanford quarterback Andrew Luck runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Sanford quarterback Andrew Luck runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Michigan State quarterback Kirk Cousins throws during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Oklahoma State wide receiver Josh Cooper runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Stanford quarterback Andrew Luck during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Louisiana State quarterback Jordan Jefferson throws during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Michigan State wide receiver B.J. Cunningham catches during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Alabama wide receiver Darius Hanks misses a catch during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Michigan State quarterback Kirk Cousins throws during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Georgia tight end Orson Charles catches during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

NFL team scouts watch participants run the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Wisconsin offensive lineman Kevin Zeitler (54) and Portland State offensive lineman Dustin Waldron during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Clemson tight end Dwayne Allen catches during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Northwestern tight end Drake Dunmore catchces during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Clemson tight end Dwayne Allen runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Missouri tight end Michael Egnew catches during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Oregon tight end David Paulson does the broad jump during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Indianapolis Colts center Jeff Saturday in attendance during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Clemson tight end Dwayne Allen does the vertical jump during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Wisconsin offensive lineman Kevin Zeitler and Iowa offensive lineman Riley Reiff during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

MIssouri tight end Michael Egnew does the vertical jump during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Oklahoma offensive lineman Donald Stephenson performs the broad jump during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Offensive linemen Lamar Holmes (20) and Rishaw Johnson (21) during a drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

SMU offensive lineman Kelvin Beachum performs the 3 cone drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Iowa offensive lineman Adam Gettis performs the high jump during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

Georgia offensive lineman Cordy Glenn performs the high jump during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Ben Liebenberg/NFL)

NFL scouts personnel in attendance during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Ohio State offensive lineman Michael Brewster runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Illinois offensive lineman Jeffrey Allen in position for the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

South Dakota offensive lineman Thomas Compton runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Stanford offensive lineman David Decastro runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Notre Dame offensive lineman Taylor Dever runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Offensive linemen warm up before performing exercises during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Utah offensive lineman John Cullen is guided during a drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Offensive lineman Garth Gerhart is guided during a drill during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Offensive lineman participants before performing exercises during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Offensive lineman participants before performing exercises during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 25 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Arizona Cardinals Strength and Conditioning coach John Lott talks with participants during the NFL Scouting Combine on Friday, Feb. 24, 2012, in Indianapolis. (Ben Liebenberg/NFL)

Arizona Cardinals Strength and Conditioning coach John Lott talks with participants during the NFL Scouting Combine on Friday, Feb. 24, 2012, in Indianapolis. (Ben Liebenberg/NFL)

Arizona Cardinals Strength and Conditioning coach John Lott looks on as USC offensive lineman Matt Kalil during the NFL Scouting Combine on Friday, Feb. 24, 2012, in Indianapolis. (Ben Liebenberg/NFL)