The world's best tennis players show their intensity on the clay courts at Roland Garros during the 2013 French Open in Paris.
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Jo-Wilfried Tsonga of France reacts after a shot during his French Open men's semifinal match against Spaniard David Ferrer at Roland Garros in Paris on June 7, 2013. Ferrer defeated Tsonga 6-1, 7-6 (3), 6-2. UPI/David Silpa
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