Punters betting on the clash between Fraserburgh and Rangers have been putting most cash on the underdogs.
Betting firm, and sponsor of the Scottish Cup, William Hill said more than 80% of money bet on the fixture was backing the Broch to cause a major upset.
The Highland League team are huge outsiders for the match with odds of 33/1 for a Fraserburgh win being offered by the betting firm.
Glasgow giants Rangers are currently 1/20 to win with a draw on the match at 10/1.
However, a spokesman for William Hill said they could see big money bets coming in for the Glasgow side before kick-off.
He said: “It is quite early days at the moment with this game as it takes place tomorrow.
“What we have found at the moment is people who have already put bets on are looking to place their coupons for the weekend.
“Being on Sky Sports we expect a lot of bets to be placed at the weekend.”
Despite more money backing the Broch, a higher number of punters are betting lower amounts on a Gers victory.
“Figures we have show that 53% of bets placed at the moment are backing Rangers to win with 43% of bets for a Fraserburgh win and the rest have placed money on a draw,” the spokesman said.
“Most of the money that has been placed is actually for Fraserburgh, which is around 84%.
“Across all markets I believe the biggest bet we have seen so far is around £50.
“However, what we are expecting is especially tomorrow that large four and five-figure sums will be placed on Rangers to win.
“There has also been an interest in the handicap market with people putting bets on Rangers at -3, and -4.”