J.J. Watt had a dominating season in 2012, leading the NFL with 20.5 sacks despite having to play with an elbow injury that he revealed this week was more significant than thought. The Houston Texans defensive end dislocated his elbow in the first week of training camp, and the team's trainers popped it back into place. He wore a brace the entire season after sitting out most of the preseason but went on to win the Associated Press' Defensive Player of the Year award.