Trubisky won't return to Saturday's preseason contest in Pittsburgh due to a knee injury.
Prior to his exit in the second quarter, Trubisky completed nine of 13 passes for 86 yards, no touchdowns and one interception and had a one-yard carry. He actually started the game after coach Sean McDermott opted to keep No. 1 QB Josh Allen out due to the slippery nature of the field from rain earlier Saturday, so Ben DiNucci will handle all the reps under center for the remainder of this game.