Mack Horton of Australia prepares prior to the men's 1500m freestyle final at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 13, 2016. (Xinhua/Li Ga)
Mack Horton of Australia prepares prior to the men's 1500m freestyle final at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 13, 2016. (Xinhua/Li Ga)