Ubettabelieveit sprang a 40/1 surprise in the Bombardier Flying Childers Stakes at Doncaster.
Nigel Tinkler's charge, winner of the National Stakes at Sandown, was returning to the minimum trip having been too keen over six in the Gimcrack at York last time and showed great tenacity in the finish.
William Haggas' 11/10 favourite Sacred finished to good effect under Tom Marquand but couldn't quite overhaul the winner who held on by a head.
The pair were a length-and-a-quarter clear of Measure Of Magic (12/1) in third.
Tinkler said: “He showed how good he was in the National Stakes (at Sandown) – he’s a very, very good horse. Last time, I probably shouldn’t have run him over six there. He ran too keen, and the ground was horrific.
“Everything went wrong, but luckily Oisin Murphy looked after him. But he’s a very good horse, and I don’t often say that.
“How he was 40-1 – it was probably because I trained him! National Stakes winner, 40-1 for this, unbelievable.
“You’re always wondering at this time of year, quite a long season – ‘is it too late in the year’? But he was working well, and this is brilliant. He was given a fantastic ride by the jockey.”
The North Yorkshire trained went on: “There’s a one per cent chance he could run in the Abbaye. He wouldn’t run there if it was soft, but that’s the one race (this season) you’d have to possibly think about. It’s one per cent, because it might be soft by then. We’ll see how he is – the ground would have to be no worse than good.”
He added: “This is brilliant – great for Yorkshire, great for Malton to get a win like that. It’s unbelievable. Getting up every morning at half-past five to feed the horses, it makes it all worthwhile.”
Scott, meanwhile, was thrilled to add such a race to his CV.
He said: “I’m delighted to get a Group winner so soon after riding my claim out. The horse did it very well, he didn’t make it easy for himself, but it’s happy days. It was a big race so I wanted to do everything right, but you have to treat it like another race.”