International Premiere Tennis League in Manila [Getty Images]

MANILA, PHILIPPINES - DECEMBER 08: Tomas Berdych of the UAE Royals returns the ball to Nick Krygios of the Singapore Slammers during the mens singles match of the International Premiere Tennis League (IPTL) at the Mall of Asia Arena in Pasay City, south of Manila, Philippines on December 08, 2015. (Photo by George Calvelo/Anadolu Agency/Getty Images)

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