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. Peter Macdiarmid/Getty Images hide caption

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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. Xu Yanyan/Xinhua/Landov hide caption

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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. Rick Rycroft/AP hide caption

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Rafael Nadal of Spain celebrates after defeating Roger Federer of Switzerland during their semifinal Friday at the Australian Open tennis championship in Melbourne. Aaron Favila/AP hide caption

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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. Aaron Favila/AP hide caption

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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. David Goldman /AP hide caption

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Venus Williams waves to tennis fans as she leaves the court after a three-hour loss to Zheng Jie of China in the U.S. Open's second round. Don Emmert/AFP/Getty Images hide caption

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Venus Williams hits a forehand during her first-round win over Kirsten Flipkens of Belgium Monday. Matthew Stockman/Getty Images hide caption

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France's Marion Bartoli celebrates her women's singles championship at The All England Lawn Tennis and Croquet Club in Wimbledon. Dominic Lipinski /PA Photos/Landov hide caption

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Serbia's Novak Djokovic (left) embraces Argentina's Juan Martin Del Potro after their match on day 11 of the 2013 Championships at Wimbledon. Carl Court/AFP/Getty Images hide caption

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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. Mike Hewitt/Getty Images hide caption

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Gertrude Moran, "Gorgeous Gussie," playing at Wimbledon in 1949. Her attire, which included a bit of lace, shocked some. George W. Hales/Getty Images hide caption

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Roger Federer of Switzerland (left) and Andy Murray of Great Britain hold up their trophies after the men's singles final match at Wimbledon Sunday. Clive Brunskill/Getty Images hide caption

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Andy Roddick races across the court to return a volley at the 2009 U.S. Open. Roddick was the last U.S. Open men's singles champion from America — which was in 2003 Edwin Martinez1/flickr hide caption

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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. Pascal Le Segretain/Getty Images hide caption

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