Argentina's Leonardo Mayer serves to Spain's David Ferrer during their final match at the tennis tournament in Hamburg, Germany, Sunday, July 20, 2014. Mayer defeated top seeded Ferrer with 6-7, 6-1 and 7-6. (AP Photo/dpa, Daniel Reinhardt)

Germany Tennis Hamburg

Argentina's Leonardo Mayer serves to Spain's David Ferrer during their final match at the tennis tournament in Hamburg, Germany, Sunday, July 20, 2014. Mayer defeated top seeded Ferrer with 6-7, 6-1 and 7-6. (AP Photo/dpa, Daniel Reinhardt)

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