BRUSSELS, BELGIUM – JULY 08: Serena Williams during her match against Kim Clijsters at King Baudouin Stadium on July 8, 2010 in Brussels, Belgium. A world record audience for a tennis match of 35,681 watched as Kim Clijsters beat Serena Williams 6-3, 6-2 in an exhibition match, surpassing the previous record of 30,472 achieved during the 1973 fixture between Bobby Riggs and Billie Jean King. (Photo by Didier Messens/Getty Images) *** Local Caption *** Serena Williams
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