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HAMBURG, GERMANY - JULY 30: Leonardo Mayer of Argentina celebrate victory over Florian Meyer of Germany after the International German Open at Rothenbaum on July 30, 2017 in Hamburg, Germany. (Photo by Martin Rose/Bongarts/Getty Images)

HAMBURG, GERMANY - JULY 30: Leonardo Mayer of Argentina celebrate victory over Florian Meyer of Germany after the International German Open at Rothenbaum on July 30, 2017 in Hamburg, Germany.  (Photo by Martin Rose/Bongarts/Getty Images)