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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American Serena Williams hits a shot during her French Open women's quarterfinal match against Russian Svetlana Kuznetsova at Roland Garros in Paris on June 4, 2013. Williams defeated Kuznetsova 6-1, 3-6, 6-3. UPI/David Silpa
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