RIO DE JANEIRO - Kosuke Hagino became the first Japanese swimmer to win an Olympic medley gold when he won the men's 400m individual four-stroke event in 4mins 6.05sec on Saturday.

American Chase Kalisz won silver in 4:06.75 while world champion Daiya Seto of Japan took bronze in 4:09.71 at the Olympic Aquatics Stadium.

Hagino, 21, a bronze medallist at the 2012 London Games, ended the United States' dominance in this event after leading from start to finish.

Hungary's Tamas Darnyi was the last non-American swimmer to win the men's 400m individual medley. Darnyi retained his Olympic title in 1992, before Tom Dolan (1996 and 2000), Michael Phelps (2004 and 2008) and Ryan Lochte (2012) emerged victorious.