Rosabee came home in splendid isolation as Vicky Haigh’s filly landed odds of 33-1 in the Dianne Nursery at Pontefract.
Ridden by Duran Fentiman, the youngster showed plenty of pace throughout and took over with an impressive turn of foot as the principals approached the distance.
Madame Jourdain, also 33-1, had applied the early pace and stuck to her task once passed but she had no answer to Rosabee and passed the post four and a half lengths down.
Haigh was not on hand to cheer home her winner but was understandably delighted with the result.
She said: “It wasn’t really a surprise to me as she’s a nice filly and she’d been working well.
“She has a nice pedigree but when I bought her as a yearling for £3000 she was lame and threw a splint.
“We were patient, got her sound again and have been pleased. It was too firm for her last time but the rain here helped and she’d run well behind Knavesmire earlier this year.
“She’s in at Doncaster again on Thursday over a furlong shorter and we’ll get her home and weigh her and have a think about it.”