| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2026 | Shelbourne | Premier Division | 7 | 2 | 0 | 2 | 0 | 7.0 |
| 2025 | Shelbourne | Premier Division | 17 | 5 | 1 | 4 | 0 | 7.0 |
| 2024 | Shelbourne | Premier Division | 17 | 1 | 2 | 6 | 0 | 6.9 |
| 2023 | Dundalk | Premier Division | 4 | 0 | 0 | 0 | 0 | 6.4 |
| 2022 | Dundalk | Premier Division | 31 | 2 | 0 | 2 | 0 | – |
| 2021 | Waterford | Premier Division | 32 | 10 | 0 | 7 | 0 | – |
| 2020 | Waterford | Premier Division | 11 | 4 | 0 | 3 | 0 | – |
| 2019 | Bray | Division 1 | 7 | 2 | 0 | 0 | 0 | – |
| 2019 | Waterford | Premier Division | 7 | 0 | 0 | 2 | 0 | – |
| 2018 | Waterford | Premier Division | 14 | 2 | 0 | 1 | 0 | – |
| 2017 | Waterford | Division 1 | 15 | 4 | 0 | 2 | 0 | – |
| Total | 162 | 32 | 3 | 29 | 0 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| 01 ene 2024 | Dundalk | Shelbourne | Free agent | |
| 01 ene 2022 | Waterford | Dundalk | Free agent | |
| - | Bray | Waterford | Return from loan | |
| - | Waterford | Bray | Loan |
J. Martin career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.