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Switzerland's Amra Sadikovic celebrates a point against Croatia's Silvia Njiric during their Fed Cup tennis match in Lisbon February 5, 2010. REUTERS/Nacho Doce (PORTUGAL - Tags: SPORT TENNIS Stock Photo - Alamy
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Martina Hingis awaits the start of the point during match against Tracy Austin and Kathy Rinaldi during the Ladies Invitational Doubles Competition at Wimbledon, 2010. Hingis partnered with Anna Kournikouva Stock Photo -
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