11 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Underwood, Toshinori | Panico, Nick | 1-0 | C02 | Round 4: Underwood, Toshinori - Panico, Nick | 2024-03-17 |
| Underwood, Toshinori | Bonin, Jay | * | C40 | Round 5: Underwood, Toshinori - Bonin, Jay | 2024-03-17 |
| Underwood, Toshinori | Sukhiashvili, Alexander | 1-0 | B23 | Round 1: Underwood, Toshinori - Sukhiashvili, Alexander | 2024-03-15 |
| Toshinori Underwood | Yogeshwar Yehamandram | 1-0 | B23 | Round 6: Toshinori Underwood - Yogeshwar Yehamandram | 2022-12-11 |
| Underwood, Toshinori | Swing, Henry | 0-1 | B13 | 2025 New York State Scholastic High School Chess Championship |