The Pittsburgh Steelers' Troy Polamalu (43) delivers a blow to the Green Bay Packers' Greg Jennings as Jennings makes a reception for a touchdown during the first half of the NFL Super Bowl XLV football game on Sunday, Feb. 6, 2011, in Arlington, Texas. (AP Photo/Charlie Riedel)
The Pittsburgh Steelers' Troy Polamalu dives at the Green Bay Packers' Jordy Nelson during the second half of the NFL Super Bowl XLV football game on Sunday, Feb. 6, 2011, in Arlington, Texas. (AP Photo/Charlie Riedel)
The Green Bay Packers' Jordy Nelson (87) tries to stay inbounds as defender Troy Polamalu of the Pittsburgh Steelers looks on during the second half of the NFL Super Bowl XLV football game on Sunday, Feb. 6, 2011, in Arlington, Texas. (AP Photo/Marcio Jose Sanchez)
Pittsburgh Steelers safety Troy Polamalu (right) intercepts a pass intended for Cincinnati Bengals receiver Terrell Owens (81) in the fourth quarter of the Steelers' 23-7 home win on Sunday. (Associated Press)
FILE - This Oct. 31, 2010, file photo shows Tennessee Titans running back Chris Johnson during an NFL football game against the San Diego Chargers, in San Diego. From Troy Polamalu's thick mass of curls to Domata Peko's fluffy, lionlike mane to Johnson's dreads to Clay Matthews' grunge look, players all over the NFL are going long. (AP Photo/Denis Poroy, File)
Pittsburgh Steelers injured safety Troy Polamalu stands on the sidelines during the final minute of the Steelers' 27-3 win over the Carolina Panthers in an NFL football game in Pittsburgh, Thursday, Dec. 23, 2010. (AP Photo/Gene J. Puskar)
