Cobb has paced the 3-2 Packers with 29 catches for 378 yards and two touchdowns this season, but went down in Sunday's victory over Baltimore when Ravens safety Matt Elam delivered a helmet to his knee on a low hit.
The blow came at the end of a 15-yard catch in the final minute of the first half and ended Cobb's day after making four grabs for 53 yards.
The play brought criticism from Packers quarterback Aaron Rodgers, who confronted Elam on the field, USA Today reported.
The Green Bay signal-caller later called it a "questionable play" while Elam declined to comment after the game.
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