Updated On: 25 July, 2021 09:36 AM IST | Tokyo | IANS
Rio Olympic champion Katinka Hosszu of Hungaria finished fifth in 4:35.98. Meanwhile, American swimmer Chase Kalisz touched home first in four minutes and 09.42 seconds to clinch gold in the men's 400m individual medley. This is the first swimming gold for Team USA in Tokyo

Tunisia`s Ahmed Hafnaoui poses with his gold medal after the final of the men`s 400m freestyle swimming event during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo on July 25, 2021. Pic/AFP
Ahmed Hafnaoui won Tunisia's first gold at the Tokyo Olympic Games in the men's swimming 400m freestyle here on Sunday.
The 18-year-old pushed Australia's Jack Mcloughlin to second in the final sprint, becoming an Olympic champion in his first appearance in three minutes and 43.36 seconds, 0.16 second ahead of the Aussie.