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ADELAIDE, AUSTRALIA - APRIL 14: Mack Horton of Australia celebrates winning the Men's 1500 metre Freestyle during the 2016 Australian Swimming Championships at the South Australia Leisure & Aquatic Centre on April 14, 2016 in Adelaide, Australia. (Photo by Quinn Rooney/Getty Images)

ADELAIDE, AUSTRALIA - APRIL 14:  Mack Horton of Australia celebrates winning the Men's 1500 metre Freestyle during the 2016 Australian Swimming Championships at the South Australia Leisure & Aquatic Centre on April 14, 2016 in Adelaide, Australia.  (Photo by Quinn Rooney/Getty Images)