Cobb was injured on the final play of the quarter when he made a diving 51-yard catch to the Arizona 3-yard line Saturday night. The catch was negated on offsetting penalties and Cobb left the field on a cart shortly after.
The Packers said in the second quarter that he would not return.
Cobb led Green Bay with 79 catches and 829 yards and six touchdowns during the regular season.
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