China's Na Li returns the ball to Italy's Sara Errani during their quarterfinal match at the Italian Open tennis tournament, in Rome, Friday, May 16, 2014. Errani won 6-3, 4-6, 6-2. (AP Photo/Alessandra Tarantino)

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China's Na Li returns the ball to Italy's Sara Errani during their quarterfinal match at the Italian Open tennis tournament, in Rome, Friday, May 16, 2014. Errani won 6-3, 4-6, 6-2. (AP Photo/Alessandra Tarantino)

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