Fadhayyil took full advantage of all the weight allowances gifted to her when demonstrating a willing resolve to land the Sky Bet City of York Stakes on the penultimate day of the Ebor meeting.
The Barry Hills-trained three-year-old returned to the level of form that saw her finish a brave second in the Jersey Stakes at Royal Ascot with a battling success in the Listed event.
After finding the undulations of Goodwood not to her liking in the Oak Tree Stakes last time out, the 5-1 joint-favourite proved that effort was just a blip when finding plenty to hold the late challenge of Speculative Bid and claim the seven-furlong prize by half a length.
Hills said: "I think cut in the ground helped a bit, she's only had three runs and for whatever reason at Goodwood she ran flat, from not a great draw. I've always thought a lot of her. I've no problem going over a mile with her now.
"After the Guineas we kept her for Ascot. She ran a great race there, but it was a very good race.
"We'll look at the Park Stakes at Doncaster and the fillies' race over a mile at Newmarket, the Sun Chariot."
Luca Cumani enjoyed a change of fortune as Beautiful Morning handed the trainer a second successive win in the British Stallion Studs EBF Convivial Maiden Stakes.
After watching the well-fancied Penhill be withdrawn from the opening race and Mizzou finish second in the Lonsdale Cup, the Newmarket handler was on target with the once-raced filly to land the prize he claimed 12 months ago with White Lake.
Despite carrying her head high the 12-1 shot, who is by Galileo and out of Date With Destiny, the only daughter of the talented George Washington, held the persistent challenge of Very Talented by a length.
Following the win Beautiful Morning received opening quotes of around 33-1 for both next year's Investec Oaks and Qipco 1000 Guineas.
Winning jockey William Buick said:"That was smart, it looked a good maiden and rode like a good race.
"She over-raced a little in stages but did well, you'd be fairly pleased with her.
"Luca suggested the Fillies' Mile but he also said she might just have one more run before being put away for next year.
"She's got a lot of pace, a mile later in the season will be as far as she wants."
Talk of a tilt at the Cambridgeshire has now entered the mind of trainer Cilve Cox following the facile success of My Dream Boat in the Nationwide Accident Repair Services Handicap.
Although having just the two horses in behind him turning for home in the mile contest the 33-1 winner benefitted from a patient ride to come with a late dash and score going away by two and a quarter lengths.
Cox said: "He did it really well. The ground was too lively for him the last couple of starts. He ran a blinder at Sandown and that gave us the confidence to keep going.
"I was worried about the draw but it actually helped us as we tucked in and they went hard up front. It worked out well.
"The Cambridgeshire is interesting. I don't think another furlong would be impossible. The most important thing for him is to be in a nice rhythm in a race and he's maturing."
Libran (9-1) was forced to settle for a share of the honours on what could potentially be his last outing in Britain when dead-heating with Memorial Day (7-1) in the opening Sky Bet First Race Special Handicap.
It looked like the Alan Swinbank-trained four-year-old had just done enough to clinch the mile-and-a-half race, but with one last effort he was joined on the line by the hat-trick-seeking Saeed bin Suroor-trained runner.
Swinbank said: "He's going down to Australia and Chris Waller is going to train him. He might have one run here with me then away he goes.
"If the ground had been faster he would definitely have won outright."
Bin Suroor said: "Physically he's doing very well and a mile and a half is the trip for him.
"We will have to see how he comes back after the race. We will find a nice race for him, a handicap or a Listed race."
The win came at a cost for Ben Curtis aboard Libran with the successful rider receiving a two-day ban (September 4 and 6) for using his whip above the permitted level.
