HALLE, GERMANY - JUNE 22: Kei Nishikori of Japan has been injured and gives up during the men's singles match against Karen Khachanov of Russia on Day 6 of the Gerry Weber Open 2017 at Gerry Weber Stadion on June 22, 2017 in Halle, Germany. (Photo by Joachim Sielski/Bongarts/Getty Images)
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Bongarts Joachim Sielski