Nfl

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Cleveland Browns quarterback Brandon Weeden passes against the Kansas City Chiefs in the first quarter of an NFL football game Sunday, Dec. 9, 2012, in Cleveland. (AP Photo/Tony Dejak)

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Washington Redskins quarterback Robert Griffin III is worked on by trainers after a knee injury during the second half of an NFL football game against the Baltimore Ravens in Landover, Md., Sunday, Dec. 9, 2012. (AP Photo/Nick Wass)

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Philadelphia Eagles running back LeSean McCoy (25) rushes with the ball in the first half of an NFL football game against the Dallas Cowboys, Sunday, Nov. 11, 2012, in Philadelphia. (AP Photo/Michael Perez)

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Dallas Cowboys wide receiver Dez Bryant tosses a football on the sidelines in the second half of an NFL football game against the Cincinnati Bengals, Sunday, Dec. 9, 2012, in Cincinnati. (AP Photo/Tom Uhlman)

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Philadelphia Eagles running back Bryce Brown (34) stiff arms Tampa Bay Buccaneers defensive back Anthony Gaitor (26) during the first quarter of an NFL football game Sunday, Dec. 9, 2012, in Tampa, Fla. (AP Photo/Brian Blanco)

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Injured Philadelphia Eagles quarterback Michael Vick walks on the field after an NFL football game against the Carolina Panthers Monday, Nov. 26, 2012, in Philadelphia. (AP Photo/Mel Evans)

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Philadelphia Eagles running back Bryce Brown (34) stiff arms Tampa Bay Buccaneers defensive back Anthony Gaitor (26) during the first quarter of an NFL football game Sunday, Dec. 9, 2012, in Tampa, Fla. (AP Photo/Brian Blanco)

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Cleveland Browns running back Trent Richardson (33) leaps over the line during the third quarter of an NFL football game against the Kansas City Chiefs, Sunday, Dec. 9, 2012, in Cleveland. (AP Photo/Rick Osentoski)

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New England Patriots tight end Aaron Hernandez (81) crosses the goal line after a reception for a touchdown in front of Houston Texans inside linebacker Darryl Sharpton (51) and free safety Danieal Manning (38) during the second quarter of an NFL game in Foxborough, Mass., Monday, Dec. 10, 2012. (AP Photo/Elise Amendola)

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Jacksonville Jaguars head coach Mike Mularkey paces the sidelines during the second half of an NFL football game against the Tennessee Titans, Sunday, Nov. 25, 2012, in Jacksonville, Fla. The Jaguars beat the Titans 24-19. (AP Photo/Stephen Morton)

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** FILE ** Washington Redskins quarterback Robert Griffin III runs with the ball during the second half of an NFL football game against the Baltimore Ravens in Landover, Md., Sunday, Dec. 9, 2012. (AP Photo/Patrick Semansky)

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Green Bay Packers defensive end Mike Daniels (76) picks up a fumble by Detroit Lions quarterback Matthew Stafford and runs it back 43-yards for a touchdown during the first half of an NFL football game Sunday, Dec. 9, 2012, in Green Bay, Wis. (AP Photo/Jeffrey Phelps)