LSU football coach Les Miles yells to his players during their NCAA college football game against Mississippi in Oxford...

...sidelines with teammates Richard Quinn, left, and Brandon Stokley (14) during the second half of an NFL football game against the Washington Redskins, Sunday, Nov. 15, 2009, in Landover, Md. Washington won 27-17

...linebacker Brandon Johnson (59) hugs defensive tackle Pat Sims (90) in the second half of an NFL football game, Sunday, Nov. 8, 2009, in Cincinnati. (AP Photo/Ed Reinke

...by Jean Baptiste Lacroix/WireImage) Dallas Cowboys wide receiver Roy E. Williams smiles during a preseason NFL football game against the Tennessee Titans, Friday, Aug. 21, 2009, in Arlington, Texas. (AP Photo/Matt Slocum

...quarterback Eli Manning sits on the ground after being knocked down during the second quarter an NFL football game against the Philadelphia Eagles on Sunday, Nov. 1, 2009, in Philadelphia

Dallas Cowboys wide receiver Miles Austin (19) scores in the first half of an NFL football game against the Atlanta Falcons, Sunday, Oct. 25, 2009, in Arlington, Texas

New England Patriots running back BenJarvus Green-Ellis during the second quarter of a NFL football game at Gillette Stadium in Foxborough, Mass. Sunday, Oct. 18, 2009

flag football

Cincinnati Bengals guard Bobbie Williams (63) after an NFL football game against the Pittsburgh Steelers, Sunday, Sept. 27, 2009, in Cincinnati. (AP Photo/Ed Reinke

Mississippi football

...AUGUST 2: Len Dawson of the Kansas City Chiefs greets fans before the Class of 2008 Pro Football Hall of Fame Enshrinement Ceremony at Fawcett Stadium on August 2, 2008 in Canton, Ohio. (Photo by...

Purdue Football Stadium

football practice

...Florida Gators Tim Tebow celebrates after defeating the Oklahoma Sooners following the NCAA's BCS National Championship football game at Dolphin Stadium in Miami, Florida

New Minnesota Vikings quarterback Brett Favre throws a pass during NFL football training camp on Tuesday, Aug. 18, 2009 in Eden Prairie, Minn