The most significant relationship in his career so far is with trainer Michael Mulvany. Thirty of his 53 rides have come through that yard, and both of his wins have come from that partnership — a win rate of around 1 in 14 when riding for Mulvany, compared to nothing from the remaining 23 rides elsewhere. That tells you something important: Casey is not yet a jockey generating opportunities across a wide range of stables, but he has found a yard that trusts him with regular rides and, crucially, has given him his only moments of success so far.
One small but genuinely interesting detail is his record on wet or muddy ground. From just 7 races in those conditions, he has won once — a win rate of 14%, or roughly 1 in 7. That may be a small sample, but it is more than three times better than his overall rate. Whether that reflects a natural feel for riding in testing conditions, or simply good fortune across a handful of races, is hard to say at this stage. It is worth watching as his career develops.
The (7) next to his name indicates he carries a 7lb claim — a weight allowance given to inexperienced jockeys to make them more attractive to trainers. It is essentially racing's way of giving apprentices a chance to get rides while they are still learning. As he rides more winners, that allowance will reduce, so there is a window here where
| Course | Races | Wins | Win rate |
|---|---|---|---|
| Bellewstown | 7 | 1 | 14.3% |
| The Curragh | 7 | 0 | 0% |
| Dundalk | 6 | 0 | 0% |
| Down Royal | 6 | 0 | 0% |
| Navan | 5 | 1 | 20% |
| Naas | 4 | 0 | 0% |
| Leopardstown | 3 | 0 | 0% |
| Gowran Park | 3 | 0 | 0% |
| Roscommon | 3 | 0 | 0% |
| Limerick | 2 | 0 | 0% |
| Killarney | 2 | 0 | 0% |
| Fairyhouse | 1 | 0 | 0% |
| Galway | 1 | 0 | 0% |
| Sligo | 1 | 0 | 0% |
| Tipperary | 1 | 0 | 0% |
| Punchestown | 1 | 0 | 0% |