Bradley Cooper and Bar Refaeli joined tennis pros Maria Sharapova and Rafael Nadal for a doubles match at the Nike Knockout Event in NYC yesterday. Serena Williams, who wore a brace from her recent foot surgery, and Roger Federer were also on hand for the exhibition games. Bradley showed off his skills, while Bar sported a tan from a recent bikini-filled Italian vacation with Leonardo DiCaprio and looked like a natural with her racket.
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