The world's best tennis players show their intensity on the clay courts at Roland Garros during the 2013 French Open in Paris.
Spaniard Nicolas Almagro hits a serve during his French Open men's fourth round match against Spaniard Tommy Robredo at Roland Garros in Paris on June 2, 2013. Robredo defeated Almagro 6-7 (5), 3-6, 6-4, 6-4, 6-4. UPI/David Silpa
German Angelique Kerber hits a shot during her French Open women's fourth round match against Russian Svetlana Kuznetsova at Roland Garros in Paris on June 2, 2013. Kuznetsova defeated Kerber 6-4, 4-6, 6-3. UPI/David Silpa
Serbian Viktor Troicki watches the ball during his French Open men's fourth round match against Jo-Wilfried Tsonga of France at Roland Garros in Paris on June 2, 2013. Tsonga defeated Troicki 6-3, 6-3, 6-3. UPI/David Silpa
Jie Zheng of China hits a shot during her French Open women's third round match against Russian Maria Sharapova at Roland Garros in Paris on June 1, 2013. Sharapova defeated Zheng 6-1, 7-5. UPI/David Silpa