William Hill are reporting taking their biggest-ever tennis bet - from a punter trying to win enough money to buy a house.
According to the firm, a London-based customer has staked £120,000 on Novak Djokovic to beat Roger Federer in Friday's French Open semi-final.
The bet is the 27th in a run of bets from the man, all of which have won so far. They included punts on curling and cage fighting.
He started with an £8,400 bet back in March and his pot has since reached £161,000.
"Six-figure bets on tennis are so rare as to be almost an endangered species, and in 30-plus years in the business I cannot recall having seen, or even heard of, a tennis bet of this size," said Hill's spokesman Graham Sharpe.
"We can think of no other punter to compare him to - he told staff when he placed his first bet that he hoped to win enough to buy himself a house - well, he can already afford a small place out in the sticks, but a Mansion in Mayfair may take a few more winning bets! He is effectively betting the house every time he bets.
"The crucial question now is - when will he decide he has won enough and walk away with his house-sized profits?"
Djokovic, unbeaten so far this year, is in from 1/3 to 2/7 to win the match with Hills.