Rafael Nadal from Spain returns the ball to Stanislas Wawrinka from Switzerland during the men's final match at the Madrid Open tennis tournament, in Madrid, Sunday, May 12, 2013. (AP Photo/Andres Kudacki)

Associated Press
Rafael Nadal from Spain returns the ball to Stanislas Wawrinka from Switzerland during the men's final match at the Madrid Open tennis tournament, in Madrid, Sunday, May 12, 2013. (AP Photo/Andres Kudacki)
Rafael Nadal from Spain returns the ball to Stanislas Wawrinka from Switzerland during the men's final match at the Madrid Open tennis tournament, in Madrid, Sunday, May 12, 2013. (AP Photo/Andres Kudacki)
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