Take Cover (6/1) gave trainer David Griffiths a notable success when burning up the Goodwood five furlongs to win the Betfred King George Stakes.
The talented but fragile seven-year-old followed up a Listed triumph at York last month with a tremendous victory for his Bawtry trainer.
Caspian Prince made the running but once Take Cover hit the front towards the far side under Andrea Atzeni well over a furlong out, he proved a tough one to peg back.
He held Extortionist by a neck, while Moviesta finished strongly on the near side but could not quite repeat last year's triumph in this Group Two contest and was just a short head away in third.
Atzeni said: "He's got a lot of speed, he likes the quick ground and he battles well. "I was so far away from the others but thankfully I held on.
"The plan was to make the running but the other horse (Caspian Prince) went quite quick. I hit the front about two out and once he gets his head in front he's hard to get by.
"He's got the speed to be a top sprinter."
A delighted Griffiths confirmed the Coolmore Nunthorpe Stakes at York's Ebor meeting would now be the likely plan.
"I've got to thank the owners, who have been so patient and allowed me to take my time with him," he said. "He's the sort of horse who tells you when he's ready to race, but he seems in great nick at the moment and the Nunthorpe would be the plan.
"I'm delighted, it's unbelievable really. We've always said he was good and he's that quick he burns them off and keeps going.
"He's my first Group winner, this is great. I think he's a player in the Nunthorpe. He likes York and as long as we get him back and he's fine that's where he will go.
"This is a great result for a stable like ours and we'll be doing some celebrating, although we've got to get the long drive back to Yorkshire out of the way first!"
Sky Bet cut him from 25/1 to 14/1 for the Nunthorpe, with spokesman Michael Shinners commenting: "At the age of seven he still looks to be improving and put up another excellent performance to win today. He would need to step up again, but we know he likes York and he can't be ruled out."
Runner-up Extortionist looks set to clash again with the winner in that August 22 contest.
His trainer, Olly Stevens, said: "I'm very pleased with that, he hasn't been beaten far.
"There's only one five-furlong race above Group Three left over here, the Nunthorpe, so I expect he'll go there."