Australian world record-breaking swimmer Cam McEvoy has had a clear dig at the inaugural Enhanced Games.

Greek swimmer Kristian Gkolomeev beat McEvoy’s 50-metrre freestyle world record time at the Games, held on Monday (AEST) in Las Vegas.

Gkolomeev also won the 100-metre freestyle, while Australia’s James “The Missile” Magnussen finished last out of four swimmers in the two races.

Magnussen swam outside the personal-best times he set more than a decade ago in the two events — clocking 22.35 seconds for the 50 metres and 49.44 for the 100 metres.

That prompted a social media post from McEvoy, who broke the official 50-metre world mark in March, which read “Seriously?! That’s all you got!”

Magnussen didn’t take long to fire back at his former Australian teammate: “Cam’s sitting at home talking about us. We’re not talking about Cam.”

The controversial Enhanced Games and their pro-doping ethos have been widely denounced by world sporting authorities.

Gkolomeev clocked 20.81 seconds, bettering McEvoy’s 20.88 world mark. The time will not count because he took banned substances.

He was also wearing a race suit long banned by swimming authorities.

It was the only sub world-record time set at the games, which promotes performance-enhancing drugs.

Gkolomeev won a $US1 million ($A1.39 million) bonus for going under the world record time. The 50-metre freestyle was the last event on the games program.

The financial lure was substantial for Magnussen, a two-time Olympian and dual 100-metre freestyle world champion who retired from swimming in 2018, until the arrival of Enhanced Games.

While Gkolomeev’s time will not be official, it was met celebrated at the games.

“I’m going to say it’s not bad at all,” Gkolomeev said of the prize money.

“This is going to change my life to the good, for sure. ⁠And yeah, I’m going to continue next year. Maybe I’ll break it again.”

While Gkolomeev dominated, it was a disappointing event for Australia’s only competitor.

The 35-year-old Magnussen, the first athlete signed to the Enhanced Games, finished last in the 50-mtre and 100-metre freestyle.

Gklolomeev won the 100 metres in 46.6, just outside the world record time of 46.4 set by China’s Pan Zhanle at the Paris Olympics.

Track and field sprinting and weightlifting were also on the program.

There was $US250,000 ($358,000) prize money on offer for race winners; and a $US1 million ($1.4 million) bonus for bettering the 100-metre freestyle or 50-metre world record times.

Melbourne-born entrepreneur Aron D’Souza founded the games and has since left the company that became The Enhanced Group.

On May 8 the company officially launched on the New York Stock Exchange with a reported $1.2 billion enterprise valuation.

The performance-enhancing drugs taken by Magnussen and other athletes are being marketed and sold by The Enhanced Group.

Several athletes who said they were clean won events at the games. American Fred Kerley and Tristan Evelyn from Barbados took out the 100-metre sprints, while Hunter Armstrong from the US claimed the men’s 50-metre backstroke.

Kerley was angry at his rivals after a succession of false starts before the lacklustre men’s 100-metre final, where his 9.97 seconds was the only sub-10 second time.

“You saw that, a lot of false starts, a lot of jumping. A lot of people don’t want to run the heats and everything. They’ve got to do better than that,” Kerley said.

-AAP