Doctor Harper won the closing Dominican Republic Handicap Hurdle on day one of Aintree's Grand National meeting on Thursday.
David Pipe's charge was sent off an 8/1 chance by punters and Tom Scudamore ensured backers went home happy with a finely-timed ride in Liverpool.
Utopie Des Bordes had led for a long way but the winner took over jumping the last and stayed on well for a one and three quarter length verdict.
Kaylif Aramis (12/1) did his best work late on and stayed on for second, while Meister Eckhart (20/1) was third for Alan King.
Jetson (14/1) was always in a prominent position and did best of those that helped cut out the early running, finishing fourth.
Pipe said: "He's always been a good horse and ran a decent race in the EBF Final. We thought the step to three miles and better ground would suit.
"He's not the most fluent over his hurdles, and I thought he was in trouble but Tom has given him a good ride. He'll be a lovely three-mile chaser."
Scudamore added: "It was a truly-run race and the step up in trip to three miles suited him. He is a horse we have always thought a lot of and running in these better races has made a man of him."