Rose Bonheur came fast and late to snatch the Listed Belgrave Stakes from Katla at Fairyhouse yesterday.
The 11-4 favourite looked to have plenty to do a furlong from home when Katla held a handy lead, but Rose Bonheur found an extra gear for Declan McDonogh.
Lady O'Reilly's three-year-old filly only went on 50 yards from home, but her electric turn of foot proved decisive as she recorded victory by half a length. Rock Jock was third.
The drop to six furlongs provided the key to Kevin Prendergast's charge, who had been far from disgraced in the Irish 1,000 Guineas.
“She missed the kicked for some reason today, which was surprising,” said McDonogh.
“She got bustled about a bit, but they went a nice pace up front and the splits came at the right time.
“I always knew she was getting there. She's a lovely filly.”
Fabian Burke, Prendergast's travelling head lad, added: “She's progressing all the time. There is a Listed race at Naas in 10 days for her.”
Tyrone trainer Andrew Oliver had a Fairyhouse winner with 11-2 shot Flowers Of Spring.
Sir Frederick and Bahrain Storm, respective former winners of the Galway Plate and Hurdle, go head to head in the Irish Open Chase when Killarney's four-day July Festival gets under way this evening.
Bahrain Storm is favourite for the race.