One X Factor fan has bet £5,000 on Rak-Su winning this year's show.
Four piece Rak-Su will head into this weekend's X Factor final with major cash wagered on them, according to bookmakers Ladbrokes.
A bet of £5,000 - the largest placed on any act to date this series - has been struck at odds of 4/9, meaning the plucky punter stands to win over £7,000 if the long-time favourites are crowned champions.
But Rak-Su actually come third in the popularity contest in terms of bets placed on the show's eventual winner since the finalists were confirmed, with interest in Kevin Davy White (8/1) being higher than either of the other two finalists at this point.
Alex Apati of Ladbrokes said: "Rak-Su have led the way at the head of the market for some time now, and our high staker will be hoping they can live up to their favourites tag this weekend."
X Factor Winner odds
Ladbrokes Latest Betting
Rak-Su - 4/9
Grace Davies - 3/1
Kevin Davy White - 8/1
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The X Factor returns LIVE at the weekend on ITV with the final.
The X Factor will start on Saturday at 7:05PM with the first performances and return Sunday at 7:20PM with the last weekend of live singing.