HALLE, GERMANY - JUNE 25: Alexander Zverev and Roger Federer after the men's singles match Roger Federer of Suiss against Alexander Zverev of Germany on Day 9 of the Gerry Weber Open 2017 at Gerry Weber Stadium on June 25, 2017 in Halle, Germany. (Photo by Joachim Sielski/Bongarts/Getty Images)
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Bongarts Joachim Sielski