IL Fenomeno struck gold for the long-standing association of Noel Meade and Paul Carberry in the bragbet.com Handicap Hurdle.
A smart novice hurdler last season and a fair fifth in the fiercely-competitive Boylesports.com Hurdle at Leopardstown in January, the seven-year-old and 16-1 shot had been well beaten at the big Festivals at Cheltenham and Fairyhouse the last twice.
However, always travelling well on this occasion, the Gigginstown horse moved menacingly to the lead jumping the final flight and finished off well to hold on by half a length from Sizing Machine.
Enchanted Forest and Saint Gervais were third and fourth respectively, with favourite Tasitiocht fifth.
Meade said: "Eddie (O'Leary) wanted to make the running on him, but they went so quick that he couldn't and we left Paul to it.
"He jumped great the whole way and was able to save something for the finish.
"You'll probably see him jump fences over the summer."