30 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Underwood, Jon | Arkell, Keith C | 0-1 | A37 | Round 4: Underwood, Jon - Arkell, Keith C | 2026-03-08 |
| Underwood, Jon | Stubbs, Oliver | 1/2-1/2 | E70 | Round 2: Underwood, Jon - Stubbs, Oliver | 2026-03-07 |
| Underwood, Jon | Beaurain, Yanis | 1-0 | A13 | Round 8: Underwood, Jon - Beaurain, Yanis | 2026-02-14 |
| Underwood, Jon | Belhout, Ahmed Zoubaier | 1-0 | A13 | Round 6: Underwood, Jon - Belhout, Ahmed Zoubaier | 2026-02-13 |
| Underwood, Jon | Brionne, Thierry | 1/2-1/2 | A10 | Round 4: Underwood, Jon - Brionne, Thierry | 2026-02-10 |
| Underwood, Jon | Abdou, Mohamed | 1-0 | A11 | Round 2: Underwood, Jon - Abdou, Mohamed | 2026-02-09 |
| Underwood, Jon | Mulleady, Peter J | 1-0 | E70 | Benidorm Chess Open B Sub-2000 2025 | 2025-10-30 |
| Underwood, Jon | Rodriguez Perez, Mauro | 1-0 | A14 | Benidorm Chess Open B Sub-2000 2025 | 2025-10-28 |
| Underwood, Jon | Matthews, Gabriel | 1-0 | A14 | Benidorm Chess Open B Sub-2000 2025 | 2025-10-27 |
| Underwood, Jon | Waller, Dan | 0-1 | A25 | Round 8: Underwood, Jon - Waller, Dan | 2024-02-23 |
| Underwood, Jon | McClement, Andrew | 1/2-1/2 | A18 | Round 6: Underwood, Jon - McClement, Andrew | 2024-02-22 |
| Underwood, Jon | Lavrov, Maxim | 1/2-1/2 | A30 | 2. Open Hvar | 2023-10-18 |
| Underwood, Jon | Kostov, Deyan Samuil | 0-1 | A20 | 2. Open Hvar | 2023-10-18 |
| Underwood, Jon | Dizdarevic, Emir | 1/2-1/2 | A10 | 2. Open Hvar | 2023-10-16 |