Schaub was injured when he was hit in the knee by Jared Allen in the second quarter of Houston's loss to Minnesota on Sunday. He was limping after the hit, but finished the second quarter before being replaced by Sage Rosenfels after halftime.
Schaub has 1,762 yards passing with 10 touchdowns and eight interceptions in seven games this season. He sat out one game earlier this season after spending the night in the hospital with a virus.
