| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | Middlesbrough | Championship | 16 | 0 | 0 | 1 | 0 | 6.5 |
| 2025/2026 | Cremonese | Serie A | 7 | 0 | 0 | 0 | 0 | 6.8 |
| 2024/2025 | Burnley | Championship | 35 | 4 | 0 | 4 | 0 | 6.8 |
| 2024/2025 | Brighton | Premier League | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2023/2024 | Ipswich | Championship | 20 | 3 | 1 | 2 | 0 | 6.8 |
| 2023/2024 | West Brom | Championship | 19 | 2 | 0 | 2 | 0 | 6.8 |
| 2022/2023 | Brighton | Premier League | 9 | 0 | 1 | 1 | 0 | 6.7 |
| 2022/2023 | Brighton U21 | Premier League 2 | 1 | 0 | 0 | 0 | 0 | – |
| 2021/2022 | Brighton | Premier League | 5 | 0 | 0 | 0 | 0 | 6.3 |
| 2021/2022 | Brighton U23 | Premier League 2 | 6 | 1 | 0 | 0 | 0 | – |
| 2019/2020 | Benfica U23 | Liga Revelacao U23 | 1 | 1 | 0 | 0 | 0 | – |
| Total | 120 | 11 | 2 | 10 | 0 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| - | Middlesbrough | Brighton | Return from loan | |
| - | Brighton | Middlesbrough | Loan | |
| - | Cremonese | Brighton | Return from loan | |
| 09 ene 2025 | Brighton | Cremonese | Loan | |
| - | Burnley | Brighton | Return from loan | |
| - | Brighton | Burnley | Loan | |
| - | Ipswich | Brighton | Return from loan | |
| 01 mar 2024 | Brighton | Ipswich | Loan | |
| 01 ene 2024 | West Brom | Brighton | Return from loan | |
| - | Brighton | West Brom | Loan | |
| 07 feb 2021 | Benfica | Brighton | Transfer | |
| 10 abr 2018 | Charlton | Benfica | Transfer |
J. Sarmiento career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.