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HALLE, GERMANY - JUNE 18: Yuichi Sugita of Japan plays a forehand in his match against Maximilian Marterer of Germany during day one of the Gerry Weber Open at Gerry Weber Stadium on June 18, 2018 in Halle, Germany. (Photo by Thomas Starke/Getty Images)

HALLE, GERMANY - JUNE 18: Yuichi Sugita of Japan plays a forehand in his match against Maximilian Marterer of Germany during day one of the Gerry Weber Open at Gerry Weber Stadium on June 18, 2018 in Halle, Germany. (Photo by Thomas Starke/Getty Images)