Tokyo: 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 Tunisian 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.
Kieran Smith won a bronze for the United States in 3:43.94.