Cailin Annamh highlighted a magnificent 3,685-1 four-timer for trainer Jessica Harrington in the Join Us Tomorrow For Racing Mares Hurdle at Gowran.
Harrington's charge was sent off a 5-2 shot for the feature event after winning her last two starts and stayed on well after the final flight to beat favourite Jennies Jewel by three-quarters of a length.
"She was good. She had a lot of weight and she had to give the second weight. She is tough and genuine and she just about got away with the ground as she is really a good ground filly," said Harrington.
"She has had a great summer and we will see about where she goes next. She has been on the go a good while now, since before Aintree.
"It would be nice to get some black type over hurdles with her. There is a graded race in England that she might go for."
Gambling Girl (8-1) had initiated Harrington's hat-trick in the Thomastown Maiden Hurdle, with the four-year-old seeing off Red Flight in style by nine and a half lengths.
Harrington said: "She was great. She wasn't meant to make the running as she is very free. Tom Lombard had her before and he did a lot of schooling with her which is great.
"She will go the mares' novice hurdle route now and she seemed to handle the ground fine."
Fresh By Nature (12-1) was a three-and-a-quarter-length winner of the Freshford Handicap Hurdle to give Harrington her third success on the card.
Harrington said: "That was a surprise as she ran so badly at Listowel the last day when I fancied her. I don't know whether it was the ground or whether she just had an off-day.
"We decided to take our time with her today, and she will improve for going up to three miles."
Mr Fiftyone (8-1), partnered by the trainer's daughter Kate, landed the closing Mooncoin Flat Race to make it a day to remember for the Harrington team.
Harrington said: "What a day! I think it must be my first ever four-timer, I've had trebles, but I can't remember any four-timers. I've always loved this horse and I wanted to run him in the spring. Kate gave him a great ride."
The Ado McGuinness-trained Pivot Bridge (12-1) outbattled front-runner Billybuster to win by half a length in the Tommy Tiernan Live Tonight At Gowran Park Handicap Hurdle.
Jockey David Splaine said: "Ado was quietly confident beforehand. He travelled away well and he likes a cut in the ground. With a bit of luck there should be another day in him."
Bishops Road justified 6-5 favouritism in the Gowran Park Maiden Hurdle as he struck for trainer Henry de Bromhead and jockey Davy Russell in the colours of Gigginstown House Stud.
De Bromhead said: "I'm delighted with that. He did it well, and they pulled well away from the third. He is a real chaser in the making and he jumps great.
"I'm delighted to get a win for the Gigginstown team and I will speak to Eddie and Michael (O'Leary) as to where he will go next, but I imagine it will be a novice hurdle."