| J P O'Brien (IRE) (Trainer) last month / 50 races (Form details from all UK, Irish and South African thoroughbred races) | ||||||||||
| Race date, time | Course | Horse | Distance | Class | Fin pos | Jockey | SP | Prize money | Winner | |
| Track summary (since 2008) | ||||
| Track | Starts | Wins | 2nds | 3rds |
| Aintree | 7 | - | 3 | 1 |
| Ascot | 31 | - | - | 2 |
| Ayr | 2 | - | 1 | - |
| Ballinrobe | 85 | 10 (12%) | 11 | 11 |
| Bath | 4 | 1 (25%) | - | 1 |
| Bellewstown | 86 | 13 (15%) | 11 | 8 |
| Carlisle | 1 | - | 1 | - |
| Catterick | 1 | - | - | 1 |
| Chelmsford city | 7 | 1 (14%) | 2 | 1 |
| Cheltenham | 50 | 3 (6%) | 5 | 4 |
| Chepstow | 1 | - | 1 | - |
| Chester | 1 | - | - | - |
| Clonmel | 98 | 13 (13%) | 12 | 11 |
| Cork | 188 | 19 (10%) | 23 | 12 |
| Curragh | 321 | 41 (13%) | 33 | 26 |
| Doncaster | 11 | - | 1 | 1 |
| Down royal | 99 | 10 (10%) | 14 | 12 |
| Downpatrick | 33 | 8 (24%) | 3 | 4 |
| Dundalk | 736 | 98 (13%) | 76 | 62 |
| Epsom downs | 1 | - | - | - |
| Fairyhouse | 233 | 30 (13%) | 26 | 22 |
| Ffos las | 1 | - | - | - |
| Flemington | 2 | 1 (50%) | - | - |
| Galway | 234 | 21 (9%) | 23 | 17 |
| Goodwood | 4 | - | 1 | - |
| Gowran park | 262 | 33 (13%) | 25 | 28 |
| Hamilton | 5 | - | 2 | - |
| Haydock | 2 | - | - | - |
| Kempton | 10 | 3 (30%) | 3 | - |
| Kilbeggan | 78 | 12 (15%) | 11 | 5 |
| Killarney | 175 | 25 (14%) | 26 | 26 |
| Laytown | 5 | - | - | - |
| Leicester | 1 | 1 (100%) | - | - |
| Leopardstown | 382 | 38 (10%) | 49 | 36 |
| Limerick | 169 | 24 (14%) | 28 | 15 |
| Lingfield | 13 | 1 (8%) | 4 | 2 |
| Listowel | 114 | 17 (15%) | 15 | 12 |
| Meydan | 3 | - | - | - |
| Musselburgh | 2 | - | 1 | - |
| Naas | 250 | 27 (11%) | 23 | 25 |
| Navan | 235 | 21 (9%) | 18 | 32 |
| Newbury | 2 | - | - | - |
| Newcastle | 3 | - | 1 | 1 |
| Newmarket | 9 | 1 (11%) | 1 | 2 |
| Pontefract | 1 | - | - | - |
| Punchestown | 189 | 20 (11%) | 22 | 15 |
| Roscommon | 114 | 18 (16%) | 13 | 12 |
| Santa anita | 1 | - | - | - |
| Sha tin | 1 | - | - | - |
| Sligo | 44 | 6 (14%) | 9 | 3 |
| Southwell | 1 | 1 (100%) | - | - |
| Thurles | 83 | 12 (14%) | 11 | 14 |
| Tipperary | 128 | 16 (13%) | 16 | 10 |
| Tramore | 47 | 1 (2%) | 5 | 6 |
| Wexford | 68 | 10 (15%) | 7 | 6 |
| Windsor | 1 | - | - | - |
| Yarmouth | 2 | - | - | - |
| York | 7 | 1 (14%) | - | - |
| Total | 4644 | 557 | 537 | 446 |
| Going summary (since 2008) | ||||
| Going | Starts | Wins | 2nds | 3rds |
| Fast | 7 | 1 (14%) | - | 2 |
| Firm | 3 | 1 (33%) | - | 1 |
| Good | 1220 | 154 (13%) | 154 | 130 |
| Good to firm | 415 | 53 (13%) | 49 | 53 |
| Good to soft | 38 | 2 (5%) | 7 | 3 |
| Good to yielding | 428 | 56 (13%) | 50 | 38 |
| Heavy | 257 | 38 (15%) | 34 | 24 |
| Soft | 550 | 65 (12%) | 57 | 51 |
| Soft to heavy | 179 | 19 (11%) | 18 | 23 |
| Standard | 722 | 102 (14%) | 85 | 66 |
| Standard / slow | 4 | 1 (25%) | 1 | - |
| Unknown | 213 | 4 (2%) | 1 | - |
| Yielding | 397 | 39 (10%) | 53 | 37 |
| Yielding to soft | 211 | 22 (10%) | 28 | 18 |
| Total | 4644 | 557 | 537 | 446 |
| Year summary | ||||
| Year | Starts | Wins | 2nds | 3rds |
| 2016 | 402 | 49 (12%) | 46 | 42 |
| 2017 | 1054 | 130 (12%) | 124 | 103 |
| 2018 | 1380 | 176 (13%) | 161 | 144 |
| 2019 | 1596 | 172 (11%) | 187 | 136 |
| 2020 | 212 | 30 (14%) | 19 | 21 |
| Total | 4644 | 557 | 537 | 446 |