Titans defensive end William Haynes suffered a concussion in Sunday's 34-14 loss to the Chiefs when he was hit in the head by an errant pass from teammate Kerry Collins. Collins floated a pass out of bounds, hitting Hayes along the sideline. "That's kind of how the game went," coach Jeff Fisher said Sunday. "I've never had a player leave the game with a concussion after getting hit with the ball on the sideline. But we'll see how he is this week."