Darkness Falls beat the previously unbeaten Desert Castle by a neck to win the Darley Dewhurst Stakes at Newmarket, giving Aidan O’Brien’s colt a Group One success after he had dropped back from one mile and one furlong to seven furlongs. Ryan Moore rode Darkness Falls, who was sent off at 6-4, while William Buick partnered 10-11 favourite Desert Castle. The result left both yards looking towards the 2,000 Guineas next season, although neither trainer presented the race as a settled outcome.
Darkness Falls had arrived at Newmarket after winning the Golden Fleece Stakes at Leopardstown over nine furlongs. His ability to prevail over a shorter trip was therefore central to the performance. Sky Sports Racing reported that he took up the running approaching the Dip and held Desert Castle’s challenge through the finish.
O’Brien said the decision to return Darkness Falls to seven furlongs had been a substantial test after his previous race, but added that the colt had shown both pace and stamina. He said the Newmarket run had been planned to give the horse experience with next spring’s Guineas in mind.
The trainer also said a Triple Crown campaign was an ambition if the colt’s progress and circumstances allowed. The BBC reported that the Triple Crown consists of the 2,000 Guineas, the Derby and the St Leger. That remains a long-range aspiration rather than a confirmed programme, but Darkness Falls has now demonstrated winning form at both seven and nine furlongs.

A close finish between two leading colts
Desert Castle lost his unbeaten record, but Charlie Appleby took encouragement from the way his runner finished. Desert Castle had come into the Dewhurst with only two races behind him and, according to Sky Sports Racing, Appleby felt he was still developing mentally.
Appleby said Buick felt the colt was asking for his effort around the three-furlong marker on that ground, and that the colt had reached the winner without being able to pass him. He described the pair as two good colts who had gone head-to-head, while suggesting Desert Castle could improve with further maturity.
The margin was a neck, meaning there was little between the first two at the line. For Darkness Falls, the victory delivered the stronger immediate result and added a Group One to his record. For Desert Castle, it supplied a first defeat but also a close performance against a rival whose prior win had come over a longer distance.
As an early Guineas comparison, the result offers contrasting evidence: Darkness Falls won after being asked to adapt from nine furlongs to seven, while Desert Castle was making only his third start. It is reasonable to view both as horses with Guineas potential on the evidence of this race, but the current form line is narrowly in Darkness Falls’ favour because he beat his rival directly.

Guineas rematch is possible, not guaranteed
O’Brien said Darkness Falls would be aimed initially at the Guineas if all went well. He also indicated that the colt should have no problem stepping up in distance later, a view based on the combination of his Leopardstown victory and this sharper Newmarket test.
Appleby said Desert Castle would be put away for the winter and that he could see no reason not to seek a rematch with Darkness Falls on the Rowley Mile in the spring. He described Desert Castle as a big, scopey horse with more maturing to do, suggesting that next season rather than this autumn is expected to be the more revealing stage of his development.
The Dewhurst therefore offered more than a narrow Group One finish. Darkness Falls has supplied a proven piece of form over seven furlongs and retained the versatility suggested by his earlier Leopardstown success. Desert Castle, meanwhile, now has a direct form line against Darkness Falls after losing by a neck and remains in his trainer’s Guineas calculations. A rematch remains possible rather than confirmed: Appleby said he saw no reason why they would not meet again, while O’Brien said Darkness Falls would start at the Guineas if everything went well.