USA swimmer Michael Phelps extended his tally to 21 Olympic gold medals as he won individual and team titles on day four at Rio 2016.
He comprehensively beat defending champion Chad le Clos in the 200m butterfly before he helped the US win the men’s 4x200m freestyle relay.
“That’s a lot of medals,” said Phelps. “It’s just insane. It’s mind-blowing.”
British quartet Stephen Milne, Duncan Scott, Dan Wallace and James Guy won the silver in the relay.
Phelps began the evening by avenging 24-year-old Le Clos’ victory over him at London 2012.
“I wanted that one back. I came into the pool tonight with a mission and the mission was accomplished,” added Phelps.
He cruised to victory in one minute 53.36 seconds as the South African only managed to finish fourth.
Japan’s Masato Sakai and Hungary’s Tamas Kenderesi overtook Le Clos in the final 50 metres to take the silver and bronze medals respectively.
“I told Bob [Bowman, his coach] when I came back how bad I wanted that 200m fly,” said Phelps.
“That being my very first Olympic event, to be able to win it in my fifth Olympics is pretty special.
“It was really just going through the last 16 years. That event was my bread and butter. That was the last time I’ll ever swim it.
“There wasn’t a shot in hell I was losing that tonight. And, if I did, every ounce that I had was left in the pool.
“Just being able to see the number one next to my name again, one more time in the 200 fly, you couldn’t have scripted it any better.”
Phelps is the most decorated Olympian of all time and has won more than twice as many gold medals at the Games as the athlete second on the list, former Soviet gymnast Larisa Latynina (nine).