Aidan O'Brien
The master of Ballydoyle — one of the most successful Flat trainers in the history of the sport.
Aidan O'Brien trains the Coolmore horses at Ballydoyle in County Tipperary and has redefined big-race Flat training, winning Classics and Group 1s across Europe and beyond year after year. The operation's strength in the top middle-distance and Classic races is without parallel.
As with the big jumps yards, O'Brien often runs several in a Group 1, using pacemakers and multiple entries tactically — so understanding which is the stable's first string, and how a race is likely to be run, is key to reading his runners. Ballydoyle two-year-old and Classic form sets the European standard.
Known for
- Numerous Epsom & Irish Derby wins
- Record Classic haul
- Global Group 1 success
Recent runners we've recorded
From our racing database — the last 24 runs we've logged for Aidan O'Brien (most recent). 4 won · 6 placed. Each links to the horse's full form.
| Date | Horse | Course | Result |
|---|---|---|---|
| 2026-10-23 | Cosmetic | Dundalk (AW) | — |
| 2026-10-23 | Near Perfection | Dundalk (AW) | — |
| 2026-10-23 | Purely | Dundalk (AW) | — |
| 2026-10-23 | Lake Lugano | Dundalk (AW) | — |
| 2026-10-23 | Institute | Dundalk (AW) | — |
| 2026-10-23 | Might Just Be | Dundalk (AW) | — |
| 2026-10-23 | Final Ascent | Dundalk (AW) | — |
| 2026-10-20 | Major Triumph | Curragh | — |
| 2026-10-20 | Tabasco River | Curragh | — |
| 2026-10-20 | Golden Ring | Curragh | — |
| 2026-10-20 | Isle Of Capri | Curragh | — |
| 2026-10-20 | Together Now | Curragh | Won |
| 2026-10-19 | Heart Of Fire | Gowran Park | — |
| 2026-10-19 | Paraguay | Gowran Park | Placed |
| 2026-10-19 | Conclusive | Gowran Park | — |
| 2026-10-18 | King Of Sparta | Leopardstown | — |
| 2026-10-18 | Lewis Carroll | Leopardstown | Placed |
| 2026-10-18 | Purely | Leopardstown | — |
| 2026-10-18 | Come What May | Leopardstown | Won |
| 2026-10-18 | Moments of Joy | Leopardstown | — |
| 2026-10-17 | Kingdom Of Camelot | Leopardstown | — |
| 2026-10-17 | Snowing | Leopardstown | Won |
| 2026-10-17 | Accumulation | Leopardstown | Won |
| 2026-10-17 | Pirate Of Penzance | Leopardstown | — |
Aidan O'Brien's runners and the model
When Aidan O'Brien has runners, our model reads every one of their races — probabilities and value against the market — on today's racecards. It doesn't follow yards or names; it prices each runner on the data.
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