Dynabee and Donnacha O'Brien hold off Mazzuri (inside)© Photo Healy Racing
After taking the sixth with Rockfish Joseph and Donnacha O'Brien doubled-up with newcomer Dynabee in the concluding Irish Stallion Farms EBF Median Auction Fillies Maiden.
Having opened at 10/1 on-course, this Calumet Farm owned three-year-old eventually went off at 8s.
Seventh three furlongs out, the daughter of English Channel was then switched to the outer and came with her challenge over a furlong out.
She soon gained a marginal lead, and kept on well inside the final furlong to just get the better of fellow newcomer Mazzuri by a short head.
The runner-up was returned at 12/1 under Billy Lee for Willie McCreery, while 7/2 chance City Ballerina was another two and a half lengths back in third. Imrana was sent off the 9/4 favourite and she finished a disappointing fifth.
Joseph O’Brien said afterwards: "She is a nice filly and was a little on edge and needed minding. She has a big engine and mine don't usually win first-time like that and are usually much greener.
"She even was very green so I'd say she has a big engine.
"This one could be my first good horse for Calumet and she could step into an Oaks Trial now. There's a chance she's a very nice filly."
Additional reporting by Thomas Weekes