Power 100 rank: 53
Rank last year: NR
Sport: NFL/San Francisco 49ers—ILB
Most recent notable achievement: 2010 Pro Bowl (4th Selection)
Key sponsors: K-Swiss
Why he's on the list: Regarded by many as the best inside linebacker in football, Patrick Willis didn't have as many tackles as in past years and missed the last game of the season for hand surgery. Still, the 49ers recognized his value with last year's $50 million contract extension, making him the NFL's highest-paid inside linebacker.