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TOKYO, JAPAN - NOVEMBER 18: Gold medalist Ippei Watanabe of Japan celebrates winning gold medal after Men's 100m Breaststroke during the 10th Asian Swimming Championships 2016 at the Tokyo Tatsumi International Swimming Center on November 18, 2016 in Tokyo, Japan. (Photo by Koki Nagahama/Getty Images)

TOKYO, JAPAN - NOVEMBER 18: Gold medalist Ippei Watanabe of Japan celebrates winning gold medal after Men's 100m Breaststroke during the 10th Asian Swimming Championships 2016 at the Tokyo Tatsumi International Swimming Center on November 18, 2016 in Tokyo, Japan.  (Photo by Koki Nagahama/Getty Images)