Paris

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Argentina's Facundo Bagnis returns the ball to Latvia's Ernests Gulbis during their second round match of the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Wednesday, May 28, 2014. (AP Photo/Darko Vojinovic)

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Latvia's Ernests Gulbis eyes the ball as he plays Argentina's Facundo Bagnis during their second round match of the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Wednesday, May 28, 2014. (AP Photo/Darko Vojinovic)

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Slovakia's Anna Schmiedlova returns the ball during the second round match of the French Open tennis tournament against Venus Williams of the U.S. at the Roland Garros stadium, in Paris, France, Wednesday, May 28, 2014. (AP Photo/David Vincent)

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Venus Williams of the U.S. wipes away some beads of sweat during the second round match of the French Open tennis tournament against Slovakia's Anna Schmiedlova at the Roland Garros stadium, in Paris, France, Wednesday, May 28, 2014. (AP Photo/David Vincent)

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Venus Williams of the U.S. looks at the ball as she prepares to serve during the second round match of the French Open tennis tournament against at the Roland Garros stadium, in Paris, France, Wednesday, May 28, 2014. (AP Photo/David Vincent)