A Las Vegas gambling patron who made a longshot bet on a golfer in the 2023 Australian Open is trying to convince regulators that he should be paid his $40,200 winnings after the sportsbook accepted his bet, but said it made an error when posting odds.

The gambler said he placed a $200 bet at 20,000:1 odds on Nov. 22 for Spanish golfer Joel Moscatel Nachshon to win the first round of the 2023 Fortinet Australian PGA Championship at the Royal Queensland Golf Club in Australia.