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TOKYO, JAPAN - JULY 24: Jan-Lennard Struff of Team Germany plays a forehand during his Men's Singles First Round match against Thiago Monteiro of Team Brazil on day one of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 24, 2021 in Tokyo, Japan. (Photo by Adam Pretty/Getty Images)

TOKYO, JAPAN - JULY 24: Jan-Lennard Struff of Team Germany plays a forehand during his Men's Singles First Round match against Thiago Monteiro of Team Brazil on day one of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 24, 2021 in Tokyo, Japan. (Photo by Adam Pretty/Getty Images)