The trainer is Aidan P O'Brien, and that name alone carries enormous weight in racing. Based at Cashel in County Tipperary, the yard has sent out 144 winners already this season — a number that reflects not just quantity but a level of operation that very few yards anywhere in the world can match. When O'Brien debuts a well-bred two-year-old, people pay attention, because the team has a long record of knowing exactly when a young horse is ready to run. That does not guarantee anything today, but it means 00blissful arrives with serious infrastructure behind her first steps on a racecourse.