There was a surprise in the Langleys Solicitors LLP E.B.F. Marygate Fillies' Stakes at York with Ceiling Kitty scoring at 20-1.
Baileys Jubilee was widely expected to maintain her unbeaten record in the Listed contest and was sent off as a 2-5 favourite.
However having shown sharp early speed next to the stands' rail, the market leader was beaten two out and faded into sixth.
The winner, trained by Tom Dascombe, drifted out towards the centre of the track to meet Mayfield Girl (22-1) who raced in isolation there for much of the race and went on to score by two lengths.
Elfie B (20-1) came home strongly for a third, a head behind the runner-up with Woodland Mill another strong finisher in fourth.
Ceiling Kitty is owned by Andrew Black and The Master Bettors after Black donated a half share in the horse to a Betfair staff tipping competition which ran on all four days at Cheltenham The four staff winners (one each day) are the "Master Bettors"
Dascombe said: "That's the first Black type home-bred. We claimed the mare (Baldovina) five years ago from Marco Botti.
"The first foal (Van Go Go) won three races last year.
"We thought she would be better and she's done nothing wrong. She missed the break first time out, then she hated the ground at Beverley and won at Kempton. I suppose she's got to go to Royal Ascot now for the Queen Mary."