FILE--In this Oct. 20, 2013 file photo, Cincinnati Bengals wide receiver A.J. Green, left, and Detroit Lions wide receiver Calvin Johnson exchange jerseys after their NFL football game in Detroit. Johnson takes the shirt off his back _ literally _ after some games to swap jerseys with an opponent. Johnson said he usually knows ahead of time when he's going to make a postgame trade, and doesn't plan to do it after Monday night's game against the Baltimore Ravens. (AP Photo/Jose Juarez, file)