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    Andy Roddick Is Calling It Quits; Here's His Greatest Moment

    The American tennis star announced his retirement on Thursday.

    Nine years after he won the U.S. Open, Andy Roddick announced Thursday that he'll retire after this year's tournament. "I just feel like it's time. I don't know if I'm healthy or committed enough to go another year," he told reporters.

    Roddick plays Bernard Tomic tomorrow night. While he's won 32 career titles, his only major title was earned in Flushing Meadows.

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