TORONTO (AP)—Jets quarterback Mark Sanchez(notes) sustained a mild right knee sprain early in the third quarter and didn’t return in New York’s 19-13 win over the Buffalo Bills on Thursday night.

Coach Rex Ryan was optimistic about the injury, but said Sanchez would likely undergo an MRI for precautionary measures. Ryan also added it’s uncertain whether Sanchez will be able to play at Tampa Bay on Dec. 13.

Related CoverageJets name rookie Sanchez starting QB Ravens frustrate Sanchez in 24-23 win over Jets Sanchez appeared to be hurt when he dived head first to end an 8-yard run on New York’s second possession of the second half.

He stayed in the game for two more plays before being replaced by Kellen Clemens(notes).

“It started to hurt shortly after that play,” Sanchez said. “It just didn’t feel right when I got back to the huddle. I put some weight on it to bend down under center and it just didn’t feel right when I tried to hand it off and get it to (David) Clowney on the end-around.”

Sanchez was examined by trainers for several minutes on the sideline before he made his way with a slight limp to the locker room. Sanchez was nursing a sore left knee this week after he was hurt in a 17-6 win over Carolina last weekend.

He was 7 of 15 for 104 yards and a touchdown pass against Buffalo.

“I’m optimistic,” Sanchez said. “I’ll do anything I can to play next week.”

The Bills lost starting right tackle Kirk Chambers(notes) in the first half because of an ankle injury, and starting linebacker Chris Draft(notes) didn’t finish because of a shoulder injury.