Serena Williams reacts after defeating Caroline Wozniacki of Denmark to win their women's singles final match of the 2014 U.S. Open on Sunday. The win was Williams' 18th Grand Slam title.
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Imogen Davis catches Rufus, a Harris hawk, in the stands above Centre Court at Wimbledon. Rufus scares off pigeons who try to eat the ryegrass on the tennis courts.
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Martina Hingis of Switzerland and Sabine Lisicki of Germany celebrate match point during Sunday's final of the Sony Open. The pair won, bringing Hingis her first victory since 2007.
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Stanislas Wawrinka of Switzerland kisses the Australian Open trophy during the awarding ceremony after winning the men's singles final against Spain's Rafael Nadal on Sunday in Melbourne, Australia.
Li Na of China celebrates after defeating Dominika Cibulkova of Slovakia during their women's singles final at the Australian Open tennis championship in Melbourne, Australia, on Saturday.
Novak Djokovic of Serbia wipes the sweat from his face during his quarterfinal loss to Stanislas Wawrinka of Switzerland at the Australian Open tennis championship in Melbourne.
Serena Williams holds up the championship trophy after defeating Victoria Azarenka, of Belarus, during the women's singles final of the 2013 U.S. Open tennis tournament on Sunday in New York.
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Steve Darcis of Belgium, left, shakes hands with Rafael Nadal of Spain Monday, after winning their first-round match at the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club.
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Serena Williams reportedly underwent emergency treatment for a hematoma related to a blood clot in her lungs the day after attending parties for the Oscars.
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