Alex Rodriguez

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Alex Rodriguez

Power 100 rank: 61
Sport: MLB/New York Yankees—3B
Age: 34
Most recent notable achievement: 2009 World Series Champion
Earnings: $39 million
Key sponsors: Rawlings, Nike

Why he's on the list: The world's highest-salaried athlete had a roller-coaster year in 2009, beginning with his admission of steroid use. Suddenly liberated from the burden of public expectation, A-Rod played with a renewed energy—especially in the postseason, where his dominating performance culminated in his long-awaited first World Series championship.