The most important relationship in his book right now is with trainer Donnacha Aidan O'Brien, where Harnett has turned 49 rides into 6 winners — a win rate of roughly 1 in every 8. That is a meaningful number. When a trainer keeps putting you up and you keep delivering at that rate, it tells you something about the level of trust being built. Six wins from 49 rides in racing is a genuine partnership, not just an occasional booking.
Leopardstown is worth keeping an eye on. He has won 3 times from 14 rides there, which works out at just over 1 in every 5 — well above his overall average. Leopardstown is a sharp, flat track that rewards jockeys who can read a race quickly and find daylight when it appears. Doing it consistently there suggests Harnett has that instinct.
His numbers on wet and muddy ground are also interesting — 1 winner from 10 races, a 10% win rate, which actually sits above his seasonal average. Some jockeys never find their rhythm on a rain-softened track. Harnett appears to handle the conditions rather than fight them.
His partnership with Kilmeaden — one win from three rides together — is still too small a sample to draw firm conclusions, but it is a combination worth watching if the horse lines up again. At 29 career winners and still only four years in, Harnett is at the stage where the numbers are starting to make an argument for him. This season is the best evidence yet that the argument is getting stronger.
| Course | Races | Wins | Win rate |
|---|---|---|---|
| Dundalk | 44 | 4 | 9.1% |
| Gowran Park | 16 | 1 | 6.2% |
| Leopardstown | 14 | 3 | 21.4% |
| The Curragh | 11 | 0 | 0% |
| Listowel | 10 | 1 | 10% |
| Killarney | 7 | 0 | 0% |
| Naas | 7 | 0 | 0% |
| Cork | 7 | 0 | 0% |
| Navan | 6 | 0 | 0% |
| Limerick | 6 | 0 | 0% |
| Tipperary | 6 | 0 | 0% |
| Down Royal | 4 | 0 | 0% |
| Roscommon | 3 | 0 | 0% |
| Galway | 2 | 1 | 50% |
| Ballinrobe | 2 | 0 | 0% |
| Sligo | 2 | 0 | 0% |
| Bellewstown | 2 | 0 | 0% |
| Thurles | 2 | 0 | 0% |
| Fairyhouse | 1 | 0 | 0% |