Poland's Agnieszka Radwanska returns the ball during the third round match of the French Open tennis tournament against Croatia's Ajla Tomljanovic at the Roland Garros stadium, in Paris, France, Friday, May 30, 2014. (AP Photo/Michel Euler)
Poland's Agnieszka Radwanska serves the ball during the third round match of the French Open tennis tournament against Croatia's Ajla Tomljanovic at the Roland Garros stadium, in Paris, France, Friday, May 30, 2014. (AP Photo/Michel Euler)
Croatia's Ajla Tomljanovic returns the ball during the third round match of the French Open tennis tournament against Poland's Agnieszka Radwanska at the Roland Garros stadium, in Paris, France, Friday, May 30, 2014. (AP Photo/Michel Euler)