Greek swimmer Kristian Gkolomeev earned a $1.7 million bonus for beating a world record while sprinter Fred Kerley won a weak 100m at the drug-friendly Enhanced Games.

As Cam McEvoy’s world record time becomes a focal point Las Vegas, swimmers say the lure of million-dollar bonuses outweighed concerns over drugs, reputation and risk.

The Australian, who was the first athlete signed by the controversial new sporting competition, was well off the pace in the 100m freestyle.