Mubrook finished with a flourish to claim the Nobber Maiden Hurdle at Navan for Edward O'Grady.
Andrew McNamara got a good tune from his mount to storm home on the run-in and score by five-and-a-half lengths from Belvedere Cruising
"He's a lucky owner for me, Mr Wilmott. He'll go for a handicap or something now," said O'Grady.
The trainer also revealed that he will work Cheltenham hopefuls Fen Game, Jumbo Rio, Capellanus and Osana after racing at Leopardstown tomorrow.