Mallett took over with the team trailing 44-0. Although the benching likely was a response to protect Flacco in a game out of reach, he was struggling mightily when he left. He completed only 8 of 18 passes for 28 yards and also threw two interceptions.
Last week, Flacco said he still wasn't feeling 100 percent after suffering a back injury in the offseason that kept him out of four preseason games. It's unclear whether his back was causing any significant issues for him before he left the game.