Serena Williams of the U.S. hits a return to compatriot Madison Keys during their women's singles semi-final match at the Australian Open 2015 tennis tournament in Melbourne January 29, 2015. ... more 
Serena Williams of the U.S. hits a return to compatriot Madison Keys during their women's singles semi-final match at the Australian Open 2015 tennis tournament in Melbourne January 29, 2015. REUTERS/Thomas Peter (AUSTRALIA - Tags: SPORT TENNIS) less 
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Reuters | Photo By THOMAS PETER / REUTERS
Thu, Jan 29, 2015 12:46 AM EST