The Louisville Cardinals had a serious scare in the first quarter of their ACC matchup with the Clemson Tigers. Linebacker Benjamin Perry attempted to get up after trying to make a tackle on a play. Riley stood up after the play, and then after a few seconds went back down to the ground. It was tough to tell exactly what happened. But he dove to make a tackle. And he was down on the ground for several minutes before trainers and medical staff attended to him, putting a neck brace on the back of his neck. Play was delayed in the game for several minutes and coaches from both teams came out onto…