Near the end of the second quarter, Cooper grabbed the football after the Bears blocked a 35-yard field goal.
Assuming nobody was going to catch up with him, Cooper slowed to a jog as he approached the goal line. Pittsburgh's Vance McDonald refused to give up on the play, and he stripped Cooper of the ball at the 1-yard line.
It wasn't a total loss for the Bears, though, as they retained possession at the 1 after Pittsburgh was flagged for illegally pushing the ball out of the back of the end zone.
Connor Barth converted a short field-goal attempt to increase Chicago's lead to 17-7 at the half.