Andy Roddick

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Andy Roddick

Power 100 rank: 79
Sport: ATP Tennis
Age: 27
Most recent notable achievement: Currently ranked 7th in the world
Earnings: $12.3 million
Key sponsors: Lacoste, Rolex, Babolat

Why he's on the list: When the tennis elite comes to America each Labor Day weekend for the U.S. Open, Roddick takes center stage as the host's best hope for Grand Slam glory.