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Koseki Yasuhiro of Japan competes during men's 50m breaststroke final of swimming at the 18th Asian Games in Jakarta, Indonesia, Aug. 24, 2018. Koseki won the gold medal. (Xinhua/Fei Maohua)
Koseki Yasuhiro of Japan competes during men's 50m breaststroke final of swimming at the 18th Asian Games in Jakarta, Indonesia, Aug. 24, 2018. Koseki won the gold medal. (Xinhua/Fei Maohua)