Milos Raonic, Maria Sharapova and Roger Federer all in action
Sabine Lisicki of Germany hits a return during her women's singles tennis match against Yaroslava Shvedova of Kazakhstan at the Wimbledon Tennis Championships, in London July 1, 2014.STEFAN WERMUTH/Reuters
Yaroslava Shvedova of Kazakhstan hits a return during her women's singles tennis match against Sabine Lisicki of Germany at the Wimbledon Tennis Championships, in London July 1, 2014.STEFAN WERMUTH/Reuters
Roger Federer of Switzerland serves during his men's singles tennis match against Tommy Robredo of Spain at the Wimbledon Tennis Championships, in London July 1, 2014.TOBY MELVILLE/Reuters
Maria Sharapova of Russia hits a return during her women's singles tennis match against Angelique Kerber of Germany at the Wimbledon Tennis Championships, in London July 1, 2014.MAX ROSSI/Reuters
Tommy Robredo of Spain serves to Roger Federer of Switzerland during their men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday July 1, 2014.Pavel Golovkin/The Associated Press
Sabine Lisicki of Germany catches a ball to sign after defeating Yaroslava Shvedova of Kazakhstan during their women' singles match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday, July 1, 2014.Sang Tan/The Associated Press
Roger Federer of Switzerland hits a return during his men's singles tennis match against Tommy Robredo of Spain at the Wimbledon Tennis Championships, in London July 1, 2014.TOBY MELVILLE/Reuters
Stanislas Wawrinka of Switzerland prepares to serve during his men's singles tennis match against Feliciano Lopez of Spain at the Wimbledon Tennis Championships, in London July 1, 2014.SUZANNE PLUNKETT/Reuters
Stanislas Wawrinka of Switzerland reacts after defeating Feliciano Lopez of Spain in their men's singles tennis match at the Wimbledon Tennis Championships, in London July 1, 2014.SUZANNE PLUNKETT/Reuters
Lucie Safarova of the Czech Republic hits a return during her women's singles tennis match against Ekaterina Makarova of Russia at the Wimbledon Tennis Championships, in London July 1, 2014.TOBY MELVILLE/Reuters
Lucie Safarova of Czech Republic lies on the ground as she celebrates defeating Ekaterina Makarova of Russia in their women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday July 1, 2014.Pavel Golovkin/The Associated Press
Ekaterina Makarova of Russia serves to Lucie Safarova of Czech Republic during their women's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Tuesday July 1, 2014.Pavel Golovkin/The Associated Press