Darley Sun defied statistics to run away with the totesport.com Cesarewitch at Newmarket.
Representing the three-year-old division, who have a lamentable record in the marathon contest, David Simcock’s youngster looked thrown in at the weights beforehand and that was just how it turned out.
Despite facing a wall of horses at halfway, 3lb claimer Andrea Atzeni weaved his way through on the 9-2 favourite and the pair bounded clear to beat Mamlook, Sereth, Dayia and Ajaan.
The early pace was set by Viper and Raslan but that pair were soon beaten and it was Johnny Murtagh who emerged as a real threat on Barney Curley's midweek gamble Sereth.
Jeff Pearce’s mare Dayia joined him at the head of affairs and Frankie Dettori briefly figured on Alanbrooke.
However, Atzeni was spotted making his move with two furlongs to go and the handicap good thing quickened up in the style of a classy animal.
Darley Sun bounded clear to win by five lengths as Mamlook, third last year, flashed home to be placed again.
Simcock said: ``It's just a relief. You know your positives about the horse but you also know what can go wrong.
“He stays extremely well and he’s something to really look forward to next year. I would love to go for the Ascot Gold Cup.”
Atzeni added: “That’s my biggest win. I’ve only been riding for three years and it was great to get a ride like this.
“He travelled so well and I was always confident in him.”
Mamlook’s trainer David Pipe was supervising his runners at Cheltenham but his father Martin, a previous winner of the Cesarewitch, was on hand.
He said: “He’s run a blinder and it’s fantastic. David nearly got there finishing second.
“He’s a genuine horse and we’re very pleased. Richard (Hughes) gave him a good ride and we’ve had some good fun with him over the years.
“He will go back jumping this winter.”
Curley said of Sereth: “He’s run a very good race and I’m happy with him.”