An anonymous Oxfordshire man has wagered £100,000 on Floyd Mayweather to beat Conor McGregor, according to Ladbrokes.
The customer, who wishes to remain anonymous, placed two separate wagers - one bet of £50,000 at odds of 2/7 and a second bet of £50,000 at 1/4 - on the American boxer winning the newly created Money Belt.
Ladbrokes reported on Tuesday that a punter in Merseyside has bet £10,000 on McGregor to win.
Ladbrokes have McGregor at 3/1 to land the spoils, and it's a 10/3 shot he wins by KO but it's also only 7/1 that he finds himself disqualified.
Jessica Bridge, of Ladbrokes, said: "The big boys are really coming out to play now, and they're finding the 'generous' odds on Mayweather hard to resist the closer we edge towards the fight."
She added: "However, every man and his dog still want to be on McGregor and the money is flying in left, right and centre on the biggest bout of all-time."