Countrywide Flame sprang a 33-1 surprise for North Yorkshire-based trainer John Quinn and jockey Dougie Costello in a dramatic race for the JCB Triumph Hurdle at Cheltenham.
There were several in with chances at the final flight, but it was Countrywide Flame who jumped it best to hit the front and gallop all of the way to the line.
Irish raider Hisaabaat (20-1) was beaten three lengths in second, with 5-1 favourite Grumeti another three-quarters of a length away in third.
Dodging Bullets was just behind in fourth.
Costello said: "He's not very big, but he's tough. Horses like this are brilliant."
Sadler's Risk set a fast pace from the outset, with the well-fancied Pearl Swan bringing up the rear.
The race began to heat up as the field came down the hill, at which point it was difficult to call.
The well-backed Baby Mix looked to be travelling with great panache, only to find nothing at the business end.
Dodging Bullets got a great run through on the stands rail, though, while Grumeti also came with what looked like a winning run.
Hisaabaat was bang there, too, but it was Countrywide Flame, challenging towards the far side, who had the measure of them all.
Balder Succes fell halfway through the race, while Pearl Swan came down at the last.
Costello added: "I was getting knocked about going to two out and I thought I would just try and find some room going to the last.
"He pricked his lugs and flew the last. It's great for all the lads in the yard."
Quinn said: "He's never run a bad race yet but I did think he had to find plenty to win.
"He's won three races, been second in a Listed race, and was third in a Grade One in Ireland and second in a Grade One at Chepstow.
"He's very tough and hardy and stuck at it really well.
"He's not very big, and got buffeted about, but I'm really pleased."
Countrywide Flame was providing Yorkshire with a second Festival victory after the Malcolm Jefferson-trained Cape Tribulation won the Pertemps Final on Thursday.
Quinn added: "I'm surprised he won, but I expected him to run a good race as he's never run a poor race over hurdles yet.
"The one thing I was slightly worried about was whether he would jump round here at this speed, but he jumped brilliantly.
"I'm delighted to have another winner for the north, I was delighted for Malcolm (Jefferson) on Thursday and I'm delighted for myself today.
"He'll go to Aintree now."
Dermot Weld was pleased to claim second with Hisaabaat, adding: "I was delighted with his performance.
"He got an excellent ride and has been a very consistent horse.
"We might go to Punchestown for the four-year-old Grade One now."
Connections of Grumeti were satisfied with his effort, but felt the ground was perhaps not in his favour.
Iain Turner, racing manager for owner Max McNeil, said: "We're happy. He jumped the last in the lead and we thought we were going to win but he's still a hell of a horse.
"He probably couldn't quicken on the ground, but he seems fine and we will just see how he is."
Paul Nicholls felt Dodging Bullets had acquitted himself well on what was only his second start over obstacles.
He said: "It was a great run and we thought there was nothing to lose by running in a Grade One because he's still a novice next year and I imagine he will stay hurdling next season."
Nicholls' Pearl Swan crashed out at the last flight but the trainer reported the horse to be fine after his fall.