The career started with a first win at Tipperary on 31 August 2025, and Endorsement has barely dropped below its best since. Looking at the last six races — second, second, third, second, first, first, reading from oldest to most recent — you can see a horse that has been getting sharper and more confident with every run. Those back-to-back wins to close the sequence are the kind of form that gets people talking. The most recent victory came at Leopardstown on 4 June 2026, just a couple of weeks ago, which is one of the most competitive tracks in Ireland. Winning there means something.
Behind the horse is one of the most powerful operations in the sport. Aidan P O'Brien, based at Cashel in County Tipperary, has sent out 138 winners already this season alone. That is a staggering number — it means his yard is producing winners at a pace most trainers could only dream of across an entire career. When a horse comes from a setup like that and is still improving at three, it tends to attract serious attention. Endorsement raced just one day ago, so this is very much a horse in the middle of an active campaign, and given everything the form suggests, there is likely more to come.
| Course | Races | Results | Last visited | Win rate |
|---|---|---|---|---|
| Leopardstown Galloping |
3 | 1 win, 1 second, 1 third | 4 Jun | 33.3% |
| Tipperary Galloping |
1 | 1 win | 31 Aug | 100% |
| Killarney Sharp |
1 | 1 second | 14 Jul | 0% |
| Ascot Galloping |
1 | 1 second | 18 Jun | 0% |
| Newmarket Galloping |
1 | 1 second | 11 Oct | 0% |