The trainer is Aidan P O'Brien, based in Cashel, Co Tipperary, and his yard is one of the most powerful operations in European racing. This season alone they've sent out 144 winners — that's not just a good year, that's a relentless, industrial level of success that most trainers could only dream of across an entire career. When a horse comes out of that yard on debut, it tends to have been prepared thoroughly, because O'Brien doesn't tend to do things by half. The first run will tell us a great deal.