Mack Horton, Australian swimmer
Mackenzie James Horton (born 25 April 1996) is an Australian freestyle swimmer. He is an Olympic gold medallist, World Championships medallist, and Commonwealth Games medallist. At the 2016 Olympic Games in Rio de Janeiro, Brazil, he finished first in the 400m freestyle, winning his first gold medal and became the first male swimmer from the state of Victoria to do so in the Games' history.