Cincinnati Bengals running back Giovani Bernard left Saturday's game against the Pittsburgh Steelers and will not return due to a concussion.
Steelers linebacker Ryan Shazier collided helmet-to-helmet with Bernard, and seemed to knock the Bengals' running back out cold.
Bernard was slow to get up and was helped to the sideline with the aid of trainers, and headed to the locker room shortly thereafter.
Bernard rushed for 28 yards on six carries before leaving the game.
