Andrea Atzeni won the Racing Post Trophy for a fourth successive year as 11-4 shot Rivet made nearly all the running at Doncaster.
Winner of the Champagne Stakes at the track last month, he was unsuited by the undulations at Newmarket in the Dewhurst, where he also raced keenly, but was much more at home back on Town Moor.
The William Haggas-trained youngster looked to be doing too much in front but he fended off challengers one by one.
Aidan O'Brien's Yucatan (11-8 favourite) was hard at work some way out before staying on to take second, a length and three-quarters away, with Salouen (16-1) placed yet again at the highest level.
The trainer's wife and assistant, Maureen Haggas, said: "It didn't go right for him last time as he was a bit keen and we were in behind.
"William said if there wasn't the pace we wanted to do our own thing - Andrea did it brilliantly."
The winner is owned by legendary former jockey Lester Piggott - Maureen Haggas' father - in partnership with John Magnier and Michael Tabor.
"He's got the right way about him. All the horses we've had out of the mare (Starship) have had very good minds and he's the same, very laid back," Haggas added.
"He never overdoes it at home so you can run them. He's taking his racing well, looks well and the ground wasn't bottomless.
"You have to take these opportunities when they present themselves."
Rivet was cut for next year's 2000 Guineas at Newmarket, but Haggas had a warning for ante-post punters.
She said: "I think we'll start off at a mile next year but he didn't enjoy Newmarket much.
"It will be up to William and the owners, so we could avoid Newmarket and look at France or Ireland.”
Rivet wins the Racing Post Trophy! https://t.co/xzAN3wz6la
— At The Races (@AtTheRaces) October 22, 2016
Rosie Briar tenaciously stuck to her guns to cause an upset in the Scott Dobson 30th Birthday Memorial Doncaster Stakes.
Andrew Balding's filly was a 20-1 shot following a maiden success at Haydock last month, but handled the step up to Listed class with a half-length success under talented apprentice Rob Hornby.
"That was very good and it was very nice of Andrew and the owners to leave my on her, as I couldn't use my claim with it being a Listed race," said Hornby.
"We've always liked her at home and although there's not a lot of her, she tries her heart out."
Soie D'Leau (14-1) provided trainer Kristin Stubbs with the most lucrative success of her career after a narrow verdict in the sunbets.co.uk Top Price Templegate Tips Handicap under Tony Hamilton.
Stubbs said: "Dubai is tempting, but he has had a long year, so we'll see."
To Be Wild (6-1) looked a seriously exciting prospect when proving much too good for his rivals in the Bet Through The Racing Post App Handicap for Hugo Palmer and Josephine Gordon.
"I didn't really know what to expect," said the champion apprentice.
"He has a few quirks, but he'd been working so well at home.
"Next year he should be better again."
Masham Star (14-1) pummelled his rivals in the Saint Gobain Nursery.
Winning trainer Mark Johnston said: "We always thought he was a nice horse.
"He's ran in the Chesham at Royal Ascot, he's been to Turkey and we've campaigned him at quite a high level.
"He got the seven furlongs well. There was a bit of a doubt about that as he was a tearaway earlier in the year.
"He picked up nicely."
