Aaron Rodgers' season started with a knee injury and ended with a concussion.
The Green Bay Packers quarterback left Sunday's season finale against the Detroit Lions after just three series. He took a hard hit on his first dropback of the game, got sacked by linebacker Jarrad Davis and lost his helmet on the play. He stayed in for two more series before he walked to the locker room with a member of the medical staff.
It's at least the third known concussion of Rodgers' NFL career. He suffered two during the 2010 season, the year in which the Packers won the Super Bowl. He did not miss a game after his first concussion, which occurred in Week 5. He missed one game later in the year after he sustained a concussion in Week 14 at Detroit.