Monaco Rose served up a 16/1 shock in the featured fillies' handicap at Down Royal.
Off a feather weight of 7st 11lb, she dictated and disputed throughout. She moved two lengths clear over a furlong from home and kept on well to win by four lengths. Flicker Flame at 12/1, was the horse to chase her home. Great White Shark the 5/6 favourite, weakened in the final quarter of a mile to come home fifth.
Trainer Dermot McLoughlin said: "It's only her second run for us. She had a good run in Navan for us on her first run and got a bit tired.
"I just thought the way the ground came for us that we would make better use of her if they were going no gallop. He (Andrew Slattery) said she kept at it.
"The owner bought her at the Sales and didn't pay dear for her.
"Any time she won in England (for Richard Fahey) she was ridden handy too and kept galloping.
"Yeah we'll have a bit of fun with her over that trip and on that ground and she will definitely get a bit further."