Franny Norton riding Sir Ron Priestley (red/yellow colours) to win the Princess Of Wales’s Tattersalls Stakes from Jim Crowley aboard Al Aasy (white stripped cap) at Newmarket Racecourse on July 8, 2021 (Image: Getty)
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Sir Ron Priestley outfought the opposition in Newmarket's feature to give Eddie Hearn's parents a notable success.
Susan and Barry Hearn saw the 100-30 shot dig deep to take the scalp of red hot favourite Al Aasy (1-2f) in the Group 2 Princess Of Wales's Tattersalls Stakes.
The pair are behind Mascalls Stud, where they bred Sir Ron Priestley and many other good horses.
Top of the pile is Subjectivist, an impressive winner of last month's Ascot Gold Cup.
However celebrations were curtailed slightly by trainer Mark Johnston's announcement that the champion stayer would miss the rest of the season.
After seeing Sir Ron Priestley score by a neck, to collect the first prize of £65,216, Barry Hearn told ITV Racing: "He's so game and of course the mare Reckoning is just throwing winner after winner.
"Subjectivist won the Ascot Gold Cup, his elder brother has just trotted up today and refused to be beaten. There's a lot more to come.
Barry and Susan Hearn at Royal Ascot 2021
"It's a wonderful Cinderella story and Sir Ron, Mark Johnson has done a fabulous job and he's delivering the goods time and again."
Sir Ron Priestley was ridden to victory by Franny Norton, one of the most experienced members of the weighing room.
Rather fittingly he competed in the 1995 Amateur Boxing Association finals and three years later, was offered a place in the Commonwealth Games team.
But he decided to turn his attentions fully to racing.
After the race, he joked about the Hearns getting him back in the ring with ITV interviewer Oli Bell, before adding: "(It's) terrific for them, (the winner is a) real tough character. He would be a Matchroom boxer this (Sir Ron Priestley) if he were a fighter."
The Goodwood Cup could be next for the winner, if connections choose to supplement him, but Subjectivist won't be in action again this term.
Subjectivist and jockey Joe Fanning won the 2021 Ascot Gold Cup
The four-year-old picked up an injury after ending Stradivarius' domination of the Gold Cup at Royal Ascot.
Johnston told Racing TV: "Unfortunately, he’s got a (leg) injury and you certainly won’t be seeing him again this year.
"It’s devastating as he’s the most exciting horse I've had for a long, long time.
"He’s obviously a potential stallion. We’ll all have to look at what’s the best future for him. It’s not impossible he will be back for the Ascot Gold Cup next year but I think it’s highly unlikely he will be back before then."