n Wednesday, Andy Roddick lost 6-7, 7-6, 6-2, 6-4, to Argentina's Juan Martin del Potro in the fourth round of the U.S. Open, drawing a close to a decade-long career in which he dominated American men's tennis. The 30-year-old announced before the tournament that it would be his last, saying a spate of injuries in recent years had led him to reconsider his future in the sport. While Roddick for many years was the U.S.'s highest-ranking tennis player, he struggled in the shadow of superior players such as Roger Federer, Rafael Nadal, and Novak Djokovic. Roddick's sole Grand Slam victory came in 2003, when he won the U.S. Open.
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