Diego Du Charmil caused a minor upset in the Doom Bar Maghull Novices' Chase at Aintree.
The two-mile Grade One looked relatively uncompetitive on paper, with dual Grade One-winning hurdler Petit Mouchoir setting a high standard following his placed efforts in the Irish Arkle at Leopardstown and the Arkle Trophy at Cheltenham.
However, the warning signs were there for his supporters before the off, as Henry de Bromhead's challenger got worked up in the parade ring and was free on the way to the start, and that wasted energy may have proved crucial in the result.
Shantou Rock took the six-strong field along for much of the way, with Petit Mouchoir on his tail.
The 4-5 favourite moved to the front early in the home straight, but the Paul Nicholls-trained Diego Du Charmil (5-1) covered the move under 19-year-old Harry Cobden and kicked two and a half lengths clear of the market leader at the line.
Cobden, who won the Topham Chase over the Grand National fences on Friday, said: "He travelled well and apart from last time, which I think is the only time he's ever fallen, his jumping really takes him into the race.
"I could feel the horse was with confidence and he pricked his ears going down to the last. He absolutely hacked up.
"He winged the fence and it was ideal."