Green Bay Packers QB Aaron Rodgers left Monday night's NFC North battle against the Chicago Bears in the first quarter with an injured left shoulder.
Rodgers was sacked by Bears DE Shea McClellin when he landed on his non-throwing arm in the opening drive.
He left the Packers sideline to be examined and returned in the third quarter in street clothes.
Seneca Wallace replaced Rodgers and is the only other QB on Green Bay's active roster.
The Packers lost 27-20 and failed to cover as 10-point faves. They host the Philadelphia Eagles next week and entered the Monday Nighter with 10-1 odds to win the Super Bowl at The LVH Superbook.
Nothing offical has been announced on the severity of Rodgers' injury.