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Roethlisberger suffered the injury in the third quarter when Bengals linebacker Vontaze Burfict drove him into the ground on a clean hit. He was carted off the field to be evaluated, but re-entered the game on the game’s final drive, helping put his team in field goal range for the 18-16 win.

Still, Roethlisberger didn’t attempt any intermediate or long passes, and seemed unable to use his full throwing motion.

If he’s unable to play, backup quarterback Landry Jones will be the next man up. Against the Bengals, he went 2 for 5 and threw what could have been a game-clinching interception to Burfict.