| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | Port Vale | FA Cup | 1 | 0 | 0 | 1 | 0 | 6.9 |
| 2025/2026 | Port Vale | EFL Trophy | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2024/2025 | Norwich | FA Cup | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2024/2025 | Norwich | EFL Cup | 2 | 2 | 1 | 0 | 0 | 7.8 |
| 2023/2024 | Norwich | FA Cup | 1 | 0 | 0 | 0 | 0 | 6.3 |
| 2023/2024 | Norwich | EFL Cup | 2 | 0 | 0 | 0 | 0 | 6.7 |
| 2022/2023 | Norwich | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2022/2023 | Norwich | EFL Cup | 2 | 0 | 0 | 0 | 0 | 6.9 |
| 2021/2022 | Middlesbrough | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | Norwich | FA Cup | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2020/2021 | Norwich | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.3 |
| 2019/2020 | Norwich | FA Cup | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2018/2019 | Norwich | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2018/2019 | Norwich | EFL Cup | 2 | 1 | 0 | 0 | 0 | – |
| 2017/2018 | Braunschweig | DFB Pokal | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2011/2012 | Arminia Bielefeld | DFB Pokal | 1 | 0 | 0 | 0 | 0 | – |
| Total | 20 | 3 | 1 | 1 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| 02 Sept 2026 | Charlton | Port Vale | Free agent | |
| - | Norwich | Charlton | Free agent | |
| - | Birmingham | Norwich | Return from loan | |
| - | Norwich | Birmingham | Loan | |
| - | Middlesbrough | Norwich | Return from loan | |
| - | Norwich | Middlesbrough | Loan | |
| - | Braunschweig | Norwich | Transfer | |
| 07 Jan 2016 | Wolfsburg | Braunschweig | Free agent | |
| 01 Oct 2014 | Werder Bremen | Wolfsburg | Free agent | |
| 07 Jan 2012 | Arminia Bielefeld | Werder Bremen | Free agent | |
| 07 Jan 2007 | Ahlen | Arminia Bielefeld | Transfer |
O. Hernandez career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.