Clark was trying to make a catch when hit by Titans safety Anthony Smith, and the tight end's knee bent awkwardly. Clark quickly was carted off the field. Clark didn't hold onto the ball, which forced Chicago to settle for Robbie Gould' 52-yard field goal.
Bears running back Marion Barber also was hurt, injuring his calf in the first half. He didn't return.
Barber caught an 8-yard pass from Jay Cutler, then ran for 2 yards on the next play on third-and-1 to pick up a first down just before the end of the first quarter. It wasn't clear exactly how he was hurt.