One of the most underappreciated athletes of the past decade is calling it quits.
Read more...Has Federer won his last championship?
Read more...Plus, the other most compelling moments of this year's tournament.
Read more...Djokovic looks to dismantle the "big three"; Roddick pushes for long-sought title.
Read more...Nadal beat Novak Djokovic on Saturday to win his first ever U.S. Open.
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