Switzerland's Roger Federer gets up after slipping in the quarterfinal match of the French Open tennis tournament against Switzerland's Stan Wawrinka at the Roland Garros stadium, in Paris, France, ... more 
Switzerland's Roger Federer gets up after slipping in the quarterfinal match of the French Open tennis tournament against Switzerland's Stan Wawrinka at the Roland Garros stadium, in Paris, France, Tuesday, June 2, 2015. (AP Photo/David Vincent) less 
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Associated Press | Photo By David Vincent
Tue, Jun 2, 2015 11:57 AM EDT