The Ralph Beckett-trained Cubanita collared Sajjhaa in the dying strides to claim the Betfred EBF Gillies Fillies' Stakes at Doncaster.
Dropping from Group One to Listed level, Godolphin's highly-rated Sajjhaa was sent off the 7-4 favourite and looked to have sealed it when Mickael Barzalona swept to the front approaching the two-furlong pole.
But her stride was shortening just as Cubanita's abundant stamina was kicking in entering the distance, and Jim Crowley's mount (8-1) was half a length to the good as they flashed past the line.
The lightly-raced maiden winner Reckoning ran on encouragingly to fill the places under champion jockey Richard Hughes.
Crowley said: "It's been stop-start with her this season so hopefully she'll stay in training next year, fingers crossed. I got a good trip round. They went a good gallop and everything went well in the end. I think she'll get a mile and a half. The last furlong was her best furlong."
Godolphin clinched the owners' championship with a double through Mar Mar and Muharrib, both trained by Saeed bin Suroor.
Mar Mar (7-2) showed a neat turn of foot two furlongs out to easily win the Betfred Cock O'The North EBF Maiden Stakes by four lengths under William Buick.
"She's a very honest filly, but she was a bit unsettled and keen last time, so we thought visors would help. She'll be a nice seven-furlong filly for next year," said Godolphin's representative Diana Cooper.
Muharrib (5-1) led over a furlong out under Barzalona to defy top weight in the Betfred 'The Home Of Goals Galore' Nursery.
Cooper said: "He's a very bonny horse who has thrived all season. He'll have a nice holiday now and he's one to look forward to. He's very honest and game and gives his all every time."
30 July 2014Road takes Plate riches
Australia preparing to return
King reigns in Sussex duel
Morphine investigation nearing end
Peculiar claims Galway honours
Reel has Vintage rivals in a spin
Peculiar claims Galway honours
King rules in Sussex
Sky flashes home in Gordon
Tough Teak outstays Goodwood rivals
Chepstow called off
Rich pickings for Ivawood
Edison out to light up Galway
Kingman all set for Sussex
Warwick to ditch Flat races
Estimate ready for Goodwood test
Showcase fixture avoids Ascot clash
Sous earmarked for Royal return
Injury woe for Hanagan
Bird ruled out of Nassau
Elleval team turn to Leopardstown
Zalty still in Galway frame
Tag recovering from Ascot exertions
Muthmir team eye Goodwood gold
Van driven out for Goodwood success
Love too much for Toormore
Cotai claims Molecomb glory
Leger hopefuls seek Gordon glory
Sennockian stars at Goodwood
Hannon aims to uphold family honour
He who would be King
29 July 2014Repeat Topaz victory for Vastonea
Eagle set for short break
Vulcanite spearheads Longsdon raid
Hughes launches double Plate bid
Estimate in Goodwood Cup field
Quick picks off Galway rivals
Lion could roar in Champion Stakes
Time out for Carpenter
Beckett considers Gesture gameplan
Pitt ponders Sir Stewards' run
Bird in full flight for Nassau
Beacon leads Hannon trio
Toormore on Goodwood mission
Star duo head Sussex field
28 July 2014PJA hits out at ERA Cosgrave case
Chopin team wait on softer ground
Options open for Approval
Pallasator states case for Ebor
Custom a cut above
Harty doubles up in Galway feature
Munich Mission impossible
Jinx on a high in France
Cox plays it cool with Kodi
Girl given Lowther target
Burke looking to Curragh
Hanagan hails Taghrooda
Toormore drops in class for Lennox
27 July 2014Beacon shines over Molecomb rivals
Miss skips Galway for Goodwood
Tag crowned queen of Ascot
Muthmir delivers in Dash
Metal proves International star
Sheikh pounces for late score
Kingman poised for showdown
Kleo hits top gear for Cumani
Dettori strikes on Osaila
Bear grills Winkfield rivals
Yorkshire Oaks target for Volume