Jack Garritty kept up the pressure on Tom Marquand in their duel for the apprentice jockeys championship when landing a 194-1 treble at York.
The 19-year-old son of former jump jockey Russ Garritty, struck on Chancery, Donjuan Triumphant and Gleese The Devil as he rode out of his claim and took his career tally to 97.
"I'll give the apprentice title a go," he said as he named his Group Three winner Eastern Impact as his highlight of the year.
Donjuan Triumphant could get the chance to be a Group winner if he makes a quick reappearance in a Group Two contest at Maisons-Laffitte after his success in the coral.co.uk Rockingham Stakes.
Garritty gave the Richard Fahey-trained Donjuan Triumphant (9-4 favourite) every encouragement from the saddle and his mount responded to his urging to run out a length-and-a-quarter winner over Dhahmaan.
Fahey said: "This horse was very keen when he first came from the breeze-ups. I couldn't really train him, but a bit of racing has changed him.
"There's a race in France on Friday. We were contemplating which to do but we might do the two, we'll see how he is. I'm delighted for Jack that he's ridden out his claim. It's nice he's got a winner straight after losing his claim."
That all-important 95th career success for Garritty came on Chancery (9-1), a two-and-a-quarter-length winner of the Download The Coral App Stakes from Off Art.
"He's a hold-up horse so everything fell right for him. They went a good gallop and he picked up well," said Garritty.
Gleese The Devil (5-1 favourite) completed Garritty's treble with a gutsy display to lift the TitanBet.co.uk Stayers Stakes by a neck from Hidden Justice.
"He's the horse I know who eats his own tail. He'll eat anything," said Fahey. "He's a half-brother to Angel Gabriel and I'm sure his owner (Dr Marwan Koukash) would like to go for the Chester Cup, but he'll have to step up."
Garritty was denied a four-timer when the Fahey-trained Prying Pandora was beaten a length by stablemate Garcia ridden by Tony Hamilton.
Fahey said of his third winner on the card: "That will be him finished for the year now. We had to geld him as he was too colty. He should do well in handicaps next year."
Jordan Vaughan was taken to hospital with a suspected broken ankle after being unshipped from Never Give In on the way to the start of that race.
Shared Equity landed a late gamble in spectacular style to give Jedd O'Keeffe his biggest training triumph in the Coral Sprint Trophy.
Available at 20-1 earlier in the day, there was a wave of money just before the off that sent his odds hurtling down to a starting price of 7-1.
And those wily punters barely had an anxious moment as PJ McDonald took Shared Equity into the lead from stall one on the far side and continued to pour it on.
Just when it looked like the field were beginning to close in, Shared Equity found even more to pull three lengths clear of Go Far with Nameitwhatyoulike half a length away in third.
"This is my biggest success by a long way," said Leyburn-based O'Keeffe. "He has been performing well in big handicaps all year, but we've never been that lucky with the ground or the draw.
"When I saw the draw I thought it might be a disadvantage and that you had to be in the middle or the stands side, but when I saw the racing yesterday, I thought we had a chance.
"Earlier in the year he was a bit too keen, but we've put some equipment on him and over six furlongs you can just let him roll. I know all trainers say the gamble has nothing to do with us. I know the owner didn't have a penny on himself. With the prize money he didn't need to.
"I haven't got any big plans, but he likes this ground. There are a couple of handicaps but now that he is more straight forward, we could look at Pattern company."
Foxtrot Romeo was banned from running for six months after refusing to go into the stalls. It was his third offence in the last 12 months.
Arthenus (100-30 favourite) signed off for the season by completing a hat-trick in the TitanBet.co.uk Stakes.
The James Fanshawe-trained gelding followed up wins at Nottingham and Ascot with a head verdict over Librisa Breeze in the hands of Freddie Tylicki.
"We think he'll be a good horse next year," said co-owner Andrew Coombs. "He was very slow to develop and he also put a nail through his foot and chipped his pedal bone, so that set him back. We've had to be patient."
