Angelique Kerber of Germany plays a shot in her quarterfinal match against Elina Svitolina of Ukraine during the Brisbane International tennis tournament in Brisbane, Australia, Thursday, Jan. 8, 2015. (AP Photo/Tertius Pickard
ETP Tennis Camps
ETP Tennis Camps
ETP Tennis Camps
French Open: Semifinals - Roger Federer wrestles Stan Wawrinka · tennisnet.com
Daniel Evans pictured in action at a tennis match between Belgian... News Photo - Getty Images
ETP Tennis Camps
Roger Federer 'focused on his comeback' as he discusses Centre Court ovation - TennisBuzz - Breaking tennis news, live scores and features
Dominic Thiem from Austria returns the ball during a Madrid Open tennis tournament match against Stanislas Wawrinka from Switzerland, in Madrid, Spain, Tuesday, May 6, 2014. (AP Photo/Andres Kudacki Stock Photo - Alamy