Sophies Echo stuck her neck out really well to land the Irish Stallion Farms EBF Fillies Maiden at the Curragh.
Despite leaving a moderate debut effort behind by filling the runner-up spot at Leopardstown last month, she was still allowed to go off at 12-1.
She was always prominent under Chris Hayes and when An Ghalanta poked her head in front a furlong from the finish, she stuck to her guns really well to prevail by a neck.
Her trainer Willie McCreery said: "We were delighted with her run at Leopardstown. She is a big, gangly filly and it's great to win a maiden at the Curragh.
"We will take our time with her now but she is maturing all the time."
Conor Hoban was seen to good effect on Takasima in the Liam Browne Lifetime Achievement In Racing Handicap.
The 7lb claimer was very aggressive on the 8-1 shot and after entering the straight with a clear advantage, only Crying Aloud could get anywhere near, and even she was still five lengths adrift at the line.
The win was Takasima's first in 25 attempts, and trainer Sean Treacy said: "I'm delighted she finally got her head in front. She has plenty of ability. She may go to Galway now for another handicap."