Ladbrokes and the Tote cut the Venetia Williams-trained Hennessy Gold Cup winner to 5-2 joint-favourite as punters seek a seventh victory by a grey horse since Desert Orchid's first success in 1986. The Tote tightened Teeton Mill from 100-30, while Ladbrokes had begun trading at 3-1 yesterday.
"Since we started betting on the race on Saturday that has been the horse that everyone has wanted to know about," Ladbrokes' Andy Clifton said.
"Other firms were bigger than us on Saturday morning but I think people have looked at the race and taken the view that only two horses can win it.
"It is only the fact that there has been good support for See More Business as well that has stopped Teeton Mill being outright favourite."