Detroit Lions wide receiver Calvin Johnson (81) catches a pass against Jacksonville Jaguars cornerback Derek Cox (21) during the second half of an NFL football game, Sunday, Nov. 4, 2012, in Jacksonville, Fla. Detroit beat Jacksonville 31-14. (Stephen Morton/Associated Press)

New England Patriots wide receiver Wes Welker (83) runs during the first half of an NFL football game at Gillette Stadium in Foxborough, Mass., Sunday, Nov. 11, 2012. (Stephan Savoia/Associated Press)

Oakland Raiders tight end Brandon Myers (83) heads downfield during an NFL football game against the Jacksonville Jaguars on Sunday, Oct. 21, 2012, in Oakland. The Raiders won the game, 26-23. (Greg Trott/Associated Press)

Indianapolis Colts wide receiver Donnie Avery runs after a catch against the Buffalo Bills during the second half of an NFL football game in Indianapolis, Sunday, Nov. 25, 2012. (Michael Conroy/Associated Press)

St. Louis Rams wide receiver Chris Givens (13) runs with the ball after a kick off during the second quarter of an NFL football game against the New York Jets Sunday, Nov. 18, 2012, in St. Louis. (Tom Gannam/Associated Press)

Chicago Bears wide receiver Brandon Marshall (15) runs with the football during a week 10 NFL football game against the Houston Texans on Sunday, November 11, 2012 in Chicago, Illinois. The Texans defeated the Bears 13-6. (Scott Boehm/Associated Press)

Cincinnati Bengals wide receiver A.J. Green (18) runs with the football during a week 10 NFL football game against the New York Giants on Sunday, November 11, 2012 in Cincinnati, Ohio. The Bengals defeated the Giants 31-13. (Scott Boehm/Associated Press)

New England Patriots tight end Aaron Hernandez (81) runs with the ball during the first half of an NFL football game against the Miami Dolphins, Sunday, Dec. 2, 2012, in Miami. (Rhona Wise/Associated Press)

Denver Broncos tight end Jacob Tamme runs the ball during the first half of an NFL football game against the Kansas City Chiefs Sunday, Nov. 25, 2012, in Kansas City, Mo. (Charlie Riedel/Associated Press)

Tennessee Titans tight end Jared Cook (89) runs against the Buffalo Bills during the first half of an NFL football game in Orchard Park, N.Y., Sunday, Oct. 21, 2012. (Gary Wiepert/Associated Press)