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."
19 December 2014Master back in the spotlight
Grugy in line to start cantering
Newland seeks more from Re
Prize money boost in HRI initiative
Zig zips to impressive victory
New steroids policy delayed
Serge states Supreme case
Martin readying big guns
Exciting Sceaux out at Fairyhouse
Firebird skips National service
Hobbs on Garde at Ascot
Fry excited by Activial chance
The New One in Haydock return
Reve camp not expecting a hat-trick
King issues Chatez Triumph warning
Bolger searching for Mossey key
King weighs up Karezak options
Henderson hoping Bobs makes Lexus
Simonsig camp play the long game
In-form Mole buries Exeter rivals
Sedgefield hit with heavy fine
Star names check in for Ryanair
Bobs revved up for Lexus repeat
Knott disqualified for three years
Geraghty braced for power Serge
Geraghty excited by Josses return
Activial stars in Ladbroke field
18 December 2014Alvarado back for National service
Winner given Lexus go-ahead
Cheltenham dreams for King's Zero
Sivola bids for Long Walk hat-trick
Power plan uncertain for Westener
Kauto pleases in Olympia display
Mullins eyes twin assault on Lexus
Value oozes class in Newbury romp
Annie Power on road to recovery
Spencer strikes after U-turn
Vautour ready for next jumps test
Mullins banks on Faugheen progress
Victory set to skip Ladbroke
Mullins: Fever can go the distance
17 December 2014Sidelined Brian misses Whittle
Sceaux to sidestep Haydock raid
Square season derailed by injury
Lexus a non-starter for Clouds
Europe return hinges on ground
Injury woe for Cookson
Plans on hold for Topper
Appeal success for Russell/Enright
Mulholland makes Master plan
Cango makes Catterick impression
Field sizes under BHA microscope
Quinn outlines Aurore options
Legal laying down the law at Ludlow
Ground dictates Attaglance plans
King heartened by Walkon return
Cross set Christmas conundrum
16 December 2014Pipe bowled over by Palace
Cole to duck Leopardstown mission
Pipe bowled over by Palace
Arbuthnot has Starluck options
Geraghty taken with weekend Heroes
Moore the merrier at Plumpton
Estrella back with a bang
Options fluid for Hargam
Lough set for Lexus workout
Sceaux in Haydock frame
Victoire at Ladbroke summit
Five left in Long Walk