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BERLIN, GERMANY - JUNE 15: Misaki Doi of Japan hits a backhand against Angelique Kerber of Germany in the women's singles match during day 4 of the bett1open at LTTC Rot-Weiß e.V. on June 15, 2021 in Berlin, Germany. (Photo by Boris Streubel/Getty Images)

BERLIN, GERMANY - JUNE 15: Misaki Doi of Japan hits a backhand against Angelique Kerber of Germany in the women's singles match during day 4 of the bett1open at LTTC Rot-Weiß e.V. on June 15, 2021 in Berlin, Germany. (Photo by Boris Streubel/Getty Images)
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Getty Images Sport Boris Streubel