Green Bay Packers quarterback Aaron Rodgers said he suffered a "sprained knee" during Sunday's victory over the Chicago Bears.
Rodgers left the game during the first half, but came back for the third quarter, leading the Packers from a 20-point deficit to emerge with a 24-23 victory.
The two-time MVP told ESPN's Rob Demovksy that he avoided taking pain medication Sunday.
"There was a lot of adrenaline and (it's) pretty sore the last three days," Rodgers said.
Rodgers did not practice Wednesday and the Packers indicated no decision has been made on his status for Week 2.