Spain's Rafael Nadal signs autographs after defeating Germany's Daniel Brands in their first round match. Nadal won in four sets 4-6, 7-6, 6-4, 6-3. —AP Photo
Argentina's Juan Monaco returns the ball to Spain's Daniel Gimeno Traver during their first round match. —AP Photo
USA's Sloane Stephens returns the ball to Italy's Karin Knapp during their first round match. —AP Photo
Czech Republic's Tomas Berdych returns the ball to France's Gael Monfils during their first round match. —AP Photo
Russia's Maria Sharapova serves against Su-Wei Hsieh of Taipei in their first round match. —AP Photo
Ukraine's Sergiy Stakhovsky, left, argues the decision of the umpire to call the ball in, in his first round match against Richard Gasquet of France. Stakhovsky later took a picture of the mark of the ball on the clay court with his smart phone. —AP Photo
Su-Wei Hsieh, of Taipei, returns against Russia's Maria Sharapova in their first round match of the French Open tennis tournament on day two. —AP Photo
Gael Monfils of France eyes the ball during his men's singles match against Tomas Berdych of Czech Republic. —Reuters Photo
France's Jo-Wilfried Tsonga serves the ball to Slovenia's Aljaz Bedene during their first round match. Tsonga won 6-2, 6-2, 6-3. —AP Photo
Li Na of China hits a return to Anabel Medina Garrigues of Spain during their women's singles match. Li beats Medina Garrigues 6-3, 6-4. —Reuters Photo
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