Jan Brueghel just outbattled stablemate Illinois as Aidan O'Brien saddled the first two home in the Betfred St Leger at Doncaster.
Following on from the success of Continuous 12 months ago, the master of Ballydoyle has now claimed the world’s oldest Classic eight times.
He was holding all the aces entering the home straight, with Grosvenor Square leading from Illinois and Jan Brueghel.
Grosvenor Square was passed at the two-furlong pole, from where 11-4 joint-favourites Illinois and Jan Brueghel took control.
And it was Jan Brueghel, partnered by former Ballydoyle apprentice Sean Levey, who ultimately stayed on the strongest to get home by a neck and stretch his unbeaten record to four.
There was drama in terms of the minor honours, as Deira Mile went past the post in third and Sunway was fourth home, but those placings were reversed following a stewards’ inquiry.
Levey, who won the 1000 Guineas on Billesdon Brook in 2018 and this year’s Irish 2,000 Guineas with Rosallion, said: "You’ll take any Classic, any Classic at this stage. Another one on my belt.
"Absolute privilege to get the ride from Aidan and the team. He looks like a very nice horse, he gives me the impression he could be a Gold Cup horse next year maybe, but I’m sure they will find a nice place for him to go next.
"I think he’s just a baby, he’s only a young thing. He ran in snatches a little bit down the back, but I got what I needed from him.
"I thought he might stop if I challenged too early. I always knew I would head him (Illinois) when I needed to."
O’Brien was at Leopardstown, where he said: "It was a great race and I’m delighted; the three of them ran great races.
"Jan Brueghel, after only having three runs, he was very babyish the last day but we thought he had come forward a lot. We knew it was going to be a big call to go and do it and he doesn’t do much (once he hits the front).
"Illinois also ran a great race and Sean Levey gave the winner a great ride. I’m delighted and it was a great run."
