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Australian Open winner Angelique Kerber of Germany signs the shoe of a supporter after her arrival at the airport in Frankfurt, Germany
Australian Open winner Angelique Kerber of Germany signs the shoe of a supporter after her arrival at the airport in Frankfurt, Germany, early morning February 1, 2016. Kerber became the first German tennis player to win a Grand Slam tournament since Steffi Graf in 1999, by beating Serena Williams of the U.S. in the final of the Australian Open in Melbourne. REUTERS/Kai Pfaffenbach

Serena & Venus Williams at the Olympics

5 August 2012

Williams sisters Venus and Serena compete for gold at the All-England Club in London during the Olympics.