Amadeus Mozart

His only win came at The Curragh last June over seven furlongs, and it told the team something important: this is a horse built for a longer trip. He is out of a mare by Galileo, one of the most celebrated sires in the history of the sport, and that bloodline tends to produce horses who get better as the distances grow. A P O'Brien, who trains Amadeus Mozart from his famous yard in Cashel, Co Tipperary, has already flagged him as the type of horse you point at a Derby trial — which is about as clear a signal of ambition as a trainer can give about a three-year-old.

O'Brien's yard is the most powerful in Ireland right now, having sent out 138 winners already this season. When a yard of that strength identifies a horse as a potential Derby trial contender, it is worth paying attention. The recent form figures — second, second, seventh, second, then that win — tell their own story: a horse who keeps showing up near the front, with one blip in the middle and a finish that confirmed everything the team suspected about him. He raced just yesterday, so he is bang in the middle of his season, and the picture of where he ends up this summer is still very much being painted.