Daily Tokyo Olympics 2020 Photos: July 31, 2021

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Cuba's Yosbany Vetia, right, exchanges punches with Ghana's Tettah Sulemanu during their men's flyweight 52-kg boxing match at the 2020 Summer Olympics, Saturday, July 31, 2021, in Tokyo, Japan. (AP Photo/Frank Franklin II)

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Gift Leotlela, of South Africa, right, wins a heat in the men's 100-meter run at the 2020 Summer Olympics, Saturday, July 31, 2021, in Tokyo. (AP Photo/Petr David Josek)

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Shaun Maswanganyi, of South Africa, runs in his heat of the men's 100-meters at the 2020 Summer Olympics, Saturday, July 31, 2021, in Tokyo. (AP Photo/David J. Phillip)