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Vladimir Morozov (L) of Russia celebrates after winning the men's 50m freestyle final at the FINA Swimming World Cup in Singapore on Aug. 15, 2019. (Xinhua/Then Chih Wey)

Vladimir Morozov (L) of Russia celebrates after winning the men's 50m freestyle final at the FINA Swimming World Cup in Singapore on Aug. 15, 2019. (Xinhua/Then Chih Wey)