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Gold medalist Anton Chupkov (L) of Russia is seen after the men's 200m breaststroke final at FINA World Championships in Gwangju, South Korea, on July 26, 2019. (Xinhua/Tao Xiyi)
 
 
Gold medalist Anton Chupkov (L) of Russia is seen after the men's 200m breaststroke final at FINA World Championships in Gwangju, South Korea, on July 26, 2019. (Xinhua/Tao Xiyi)