Trainer Roger Varian had seven winners on three cards Saturday at odds of 34,838-1.
He had all three at Ayr and Newbury, and another win at Newmarket.
Among the highlights was Sakheer’s impressive win in the Mill Reef Stakes at Newbury, six days after Varian won the St Leger with Eldar Eldarov.
Meanwhile, Danny Tudhope became the first Scottish jockey to win the Ayr Gold Cup on home turf for 50 years when Summerghand was victorious.
The David O’Meara-trained 12-1 shot came late to claim victory and Tudhope punched the air in delight as he emulated countryman Richard Hutchinson, who won the Swinging Junior in 1972.
Newmarket trainer Varian said it was “special” to have seven winners on the same day.
“It’s been a fantastic week with the St Leger and now all these winners in a row,” he said.
“You don’t expect that to happen, and especially on a day when the race is so competitive,” he said.
“We’re going to enjoy it, it doesn’t happen often. You can never expect things to go as well as they did for us today, but everything is clicking.”
The record for winners trained in one day is 12 – for Michael Dickinson on Boxing Day 1982 in six separate meetings.
Varian’s seven winners
13:10 Newbury exoplanet 5-2 favorites
13:55 Ayr Royal Champion 9-4
14:06 Newmarket Al Husn 9-2
14:15 Newbury Mitbaahy 9-2
14:30 Ayr dark lord 14-1
14:50 Newbury Sakheer 4-5 favorites
17:20 Ayr Aymeric 11-4 fav
Combined probabilities 34.838-1
Summerghand and Tudhope win the Ayr Gold Cup
In the six-furlong Ayr Gold Cup, Scotland’s richest four-horse race of the year, the eight-year-old Summergand rose in the furthest furlong to defeat by a length.
Commanche Falls (10-1) was second with Juan Les Pins (28-1) third.
Last year’s winner Bielsa, who was looking to become the first back-to-back winner of the race, finished in a field of 24 runners.
Commanche Falls bid to add the prestigious race to the Stewards’ Cup, which he won in July, but the winner, who was also victorious when they met at York last month, was too strong again.
O’Meara was picking up his second Ayr Gold Cup to add to his win on Louis The Pious in 2014 and told ITV Racing: “He’s been with me for a long time and he’s an old legend, isn’t he?
“He’s run here a few times and hit the woodwork quite a bit. He’s an absolute legend.
“I don’t gallop. Like a lot of these good sprinters, he doesn’t need a lot of work. He runs quite often and looks after himself.
“He loves the game and it was a great ride for Danny, I think they were saying it’s been over 50 years since a Scottish jockey won this race.”