Wild Coco showed stamina is her forte as she outstayed her rivals in the DFS Park Hill Stakes at Doncaster today.
Sent off the 7-4 favourite having won the Lillie Langtry Stakes on her reappearance this season, Henry Cecil's four-year-old took a further step forward by winning the contest known as the 'fillies' St Leger'.
Owned by the German breeding operation Gestut Rottgen, she is the first horse they have had in training with Cecil.
She looked to have plenty to do three furlongs out as champion jockey Paul Hanagan kicked clear on Estimate, the Queen's Royal Ascot winner.
However, Wild Coco was just hitting top gear inside the final furlong under Tom Queally and always looked like getting up, winning by a length and a quarter. Estimate lost second on the line to Hazel Lavery.
"She's got a high cruising speed and I didn't want to get stopped in my run and have to build the revs up again," said Queally.
"I needed room, but I got it. She's tough and she battled well.
"If I'd been stopped we may have struggled. She's going the right way, she's very nice."
Jocelyn de Moubray, representing the winning owners, said: "The idea of sending horses to Sir Henry was to show that the stud could compete on the international stage.
"Sir Henry always liked her and thought she could have run in the St Leger last year but she did not mature quickly enough.
"She'll probably go to Ascot next (Fillies' And Mares' Stakes, on Champions Day)."
Hazel Lavery could head to France for her next run while Estimate is likely to step up in trip.
The other Group race on the card, the Japan Racing Association Sceptre Stakes, went to the rejuvenated Sunday Times.
Peter Chapple-Hyam's filly was second in the Cheveley Park Stakes at two but in three runs this season had shown very little.
The 22-1 chance quickened up in smart style on Town Moor, though, to beat Godolphin's Gamilati by a length.
"I thought she might be in the first four or five but that she might not get home as she hadn't run for a while," said Chapple-Hyam.
"The Guineas just took everything off her, she didn't stay.
"We turned her out with the idea of a late campaign.
"Now she's won a Group race I'd probably retire her at the end of this season but the owner is a sportsman.
"Seven furlongs is her trip and there aren't many races for her."
Charlie Hills unleashed a nice juvenile in Glenard (14-1) who won the crownhotel-bawtry.com Irish EBF Maiden over a mile.
The Derby entry defied his inexperience to get up close home and beat two rivals who had the aid of a previous run.
Hills said: "The horses are just coming back to form. He was green and babyish but we've always liked him.
"He has a lovely action but I thought he'd come on for the run today.
"He's in the Derby but has no fancy entries this year. He might go for something like the Autumn Stakes next."
Franny Norton was emotional after partnering Jeremy Noseda's The Gold Cheongsam (11-4 favourite) to victory in the Weatherbys Insurance £300,000 2-Y-O Stakes.
Liverpool-born Norton dedicated his victory to the Justice For The 96 campaign after the news broke on Wednesday that supporters had been cleared of wrong-doing during the Hillsborough disaster 23 years ago.
"That victory isn't for me, it's for the Hillsborough 96 and to do it in red and white silks makes it special," said Norton.
"Faster ground would have suited her better but she does everything right.
"I was screaming for the line at the end, though."
Richard Fahey's Jamesbo's Girl (8-1) has proved a shrewd claim for connections and picked up a nice prize in the EBF Carrie Red Fillies' Nursery.
The win saw Fahey and Hanagan reunited but the trainer was keen to push all the plaudits the way of the owner, Philip Rolls.
"She's not been a bad claim, Philip claimed her and he can claim a few more if he wants!" said Fahey.
"He's really fallen in love with her, he's given her her own website and everything.
"This was her target but I was worried she wouldn't get in. She ended up with nearly top weight."
Black Spirit (7-2) gained a deserved success in the DFS Handicap.
Struck into badly when second at Royal Ascot, he had not run since but ran out a convincing winner for Clive Cox and Adam Kirby.
"This is very deserving, he was struck into badly and has been absent since," said Cox.
"I don't think he'll go for the Cambridgeshire. With a penalty it will be very tough. We'll regroup."