Steelers quarterback Byron Leftwich, expected to start during Ben Roethlisberger's suspension, has injured his left knee during the first half of an exhibition game against Carolina.
According to the Pittsburgh Post-Gazette, Leftwich was taken to an area hospital to undergo an MRI.
Leftwich completed an 18-yard pass to rookie Emmanuel Sanders before being knocked off his feet as running back Mewelde Moore attempted to block safety Marcus Hudson. The play occurred with 10:25 left in the second quarter Thursday night.
Leftwich was examined by team doctors on a stretcher behind the Steelers' bench, then limped into a nearby tunnel that leads to the locker room. Team officials said he would not return to the game.
This could pave the way for Dennis Dixon to now be the starting QB for the Steelers until Ben Roethlisberger comes back from his suspension.