TUSCALOOSA, Alabama – The nation's No. 2 team has the nation's No. 1 defense. The Crimson Tide has been punishing opponents this season. “It's exciting to do what we do,” junior defensive end Damion Square said. “It's exciting to make a tackle or make a big play and change the momentum of the game.” In this video, he says execution will be the key to defeating Tennessee on Saturday at Bryant-Denny Stadium.