Warm Heart toughed it out to take the Pertemps Network Yorkshire Oaks for Aidan O'Brien in a thrilling finish from Free Wind.
The James Doyle-ridden 9-1 winner was the second string for Ballydoyle, with her Irish Oaks-winning stablemate Savethelastdance the 100-30 favourite under Ryan Moore.
The latter made the running, as Warm Heart travelled patiently in mid-division, eventually making her move around the final bend and smoothly gaining all the way up the home straight.
John and Thady Gosden's Free Wind had to wait for a gap before going with her and the two battled all the way to the line, with Warm Heart just getting the verdict by a head from Frankie Dettori's mount.
Savethelastdance was another two lengths back in third.
A multiple winner at Group Two level, John and Thady Gosden's Free Wind was aiming to break her Group One duck at the first attempt and just came up short.
My goodness, what a race! 😱
— York Racecourse (@yorkracecourse) August 24, 2023
Free Wind flew home but Warm Heart (9-1) and the @the_doyler were not to be denied in the Pertemps Network Yorkshire Oaks ❤️@Ballydoyle | @coolmorestud pic.twitter.com/ETaiAjGhMl
Dettori said: "She's run a super race. I couldn't get out when I wanted to so I had to wait an extra half a furlong. That meant James had all the momentum.
"I got to him but I just wish I'd been able to get my filly rolling beforehand, that 9lb (weight for age concession) just took its toll in the end. I just think the pocket I got stuck in cost me."
John Gosden said: "She ran great but it just took her a little time to get out and that meant the winner got first run on us.
"That's life, but she ran a super race and I'm really happy with her. We'll see what comes next, but Champions Day would be an obvious target for her."
Bluestocking, who finished fourth, and who had run so well in the Irish Oaks, did not quite reproduce that form and her trainer Ralph Beckett put that down to the faster ground.
"She's just not quite as effective on that quicker ground as she is on slower ground, that's all it is," said Beckett.
"She's run her race, she's run well and she's run through the line but she's just not quite as good on quicker ground.
"Come the autumn I'd like to think there will be a few nice targets for her."
Rossa Ryan said of the filly: "She's run a blinder, but she's probably more effective on the softer ground where she can use her turn of foot better."
Ropey Guest takes Clipper at huge odds
The highly-popular Ropey Guest claimed a notable victory at York when taking the Clipper Handicap for George Margarson.
The gelding is great campaigner for the stable and has often come within inches of landing a big handicap prize, including second-placed finishes in the past two renewals of the Bunbury Cup at Newmarket.
At one stage the highest-rated maiden in the country, he has looked like he was due a bit of luck and on the Knavesmire he finally received it under regular rider Tom Queally.
Having started at 40-1, the six-year-old ran gamely and saw off all challengers to come home a head in front of Point Lynas.
Margarson said: "Last time at Ascot he blew the start and before that in the Bunbury he was very unlucky, Sean Levey was devastated, so we knew he was in better form this year than he ever has been.
"The Guest family (owners) live near Ascot and have their business there so he tends to run there a lot and it's good money there. There is a race at Ascot next week but I said we'd come here and go for the big one, it's over £70,000 to the winner.
"Fair play to Tom, he said he'd ride him as a stayer, he has won over a mile at Yarmouth but you can't really count that. He's done most of his running in sprints. This is great for the yard, especially with the sales season coming up.
"Katie (daughter) is away in Finland competing in a triathlon, she's devastated she can't be here but Rosie (daughter) has been riding her out and has obviously improved him!
"That's his fourth win and he's won over £200,000 in prize-money. He's six now yet he was running in the Coventry and Acomb at two so we've never shirked anything."
Sea Theme scores for Haggas in Galtres Stakes
William Haggas' Sea Theme was a determined winner of the Listed British EBF & Sir Henry Cecil Galtres Stakes at York.
The Sea The Stars filly, who was the 5-2 favourite, won a Doncaster novice by a good margin last time out and showed plenty of tenacity to follow that win up with another when coming home a head to the good.
Ridden by Tom Marquand, she chased down the leading horse, Jane Chapple-Hyam's Climate Friendly, and held off some fast finishers to take the valuable Knavesmire prize.
Haggas said: "Tom said she doesn't know what she's doing yet. A horse got away and he was just trying to gather her up so it's very good she's won
"She's a tough filly, she's done well to win as she's pretty inexperienced. She battled hard and she's clearly got ability."
There are Group-race options under consideration now, with the filly proven on conditions near both ends of the spectrum.
"She's had a race today, there were no prisoners taken there. It could possibly be Park Hill (Doncaster) if she's all right. Champions Day? I don't know, that's a big step up.
"I always felt she wanted top of the ground as she's such a fluent mover - she won on the soft at Doncaster when I wanted to pull her out, but the owner said to let her take her chance, I'm glad we did.
"She seems to go on most ground, so I suppose she's going to be pretty good."
