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HALLE, GERMANY - JUNE 17: Tomas Berdych of Czech Republic plays a forehand in his match against Borna Coric from Croatia during day three of the Gerry Weber Open at Gerry Weber Stadium on June 17, 2015 in Halle, Germany. (Photo by Thomas Starke/Bongarts/Getty Images)

HALLE, GERMANY - JUNE 17:  Tomas Berdych of Czech Republic plays a forehand in his match against Borna Coric from Croatia during day three of the Gerry Weber Open at Gerry Weber Stadium on June 17, 2015 in Halle, Germany.  (Photo by Thomas Starke/Bongarts/Getty Images)