Michael Phelps became the Olympian with most Gold Medal under his Belt!

Earning his 21st gold and 24th overall medal, Michael Phelps became the most decorated Olympian of all time.

Michael Phelps claimed his second gold medal in one night and the 21st of his career as the United States won the men’s 4×200 metres Olympic freestyle relay on Tuesday.

He won his 20th gold medal earlier in the day with a victory in the 200m butterfly.

It was the fourth successive US Olympic victory in the event.

The Americans led throughout, with Conor Dwyer handing over to Townley Haas and Ryan Lochte. There was a huge roar from the Rio crowd when Phelps sprang from the block with a lead of 1.76 seconds over Japan and 2.88 seconds over Britain.

Michael Phelps, Conor Dwyer, Townley Haas, and Ryan Lochte celebrate their win on Tuesday at the 2016 Olympics in Rio de Janeiro

The Americans touched home in 7 minutes 00.66 seconds.

For Britain, who had qualified first for the final, James Guy overhauled Takeshi Matsuda on the final leg to take the silver in 7:03.13, with Japan clocking 7:03.50 for the Bronze.

It was Britain’s first medal in the event since they won a bronze in 1984, and made up for Guy’s disappointment in failing to pick up a medal in the 200m and 400m freestyle.

But the night belonged to the Americans and Phelps, who after four days of competition in Rio, has won three gold medals at his fifth Olympic Games.