26 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Gao, Oscar | Ross, Brayden | 0-1 | B21 | Open (U12- U20) | 2026-04-12 |
| Gao, Oscar | Nisha Raj, Taran | 1-0 | B07 | Open (U12- U20) | 2026-04-08 |
| Gao, Oscar | Macmullin, Owen | 1-0 | B17 | 2026 Australian Championship Under 18 years | 2026-01-18 |
| Gao, Oscar | Lux,Hugo de Melo | 0-1 | B10 | Round 3: Gao, Oscar - Lux,Hugo de Melo | 2024-07-06 |
| Oscar Gao | Anh Quan Nguyen | * | B22 | Round 8: Oscar Gao - Anh Quan Nguyen | 2024-01-20 |
| Oscar Gao | Iker Hernandez Mendez | 1/2-1/2 | B21 | Round 3: Oscar Gao - Iker Hernandez Mendez | 2024-01-14 |
| Oscar Gao | David Guo | 1-0 | B21 | Round 2: Oscar Gao - David Guo | 2024-01-13 |
| Gao, Oscar | Kyriakides, Andreas | 1-0 | B03 | World Youth Cup 2021 O12-G16 - Open 12 | 2021-08-06 |
| Gao, Oscar | Mezni, Elyes | 0-1 | B47 | World Youth Cup 2021 O12-G16 - Open 12 | 2021-08-06 |
| Gao, Oscar | Koosel, Hans-Georg | 1/2-1/2 | B73 | World Youth Cup 2021 O12-G16 - Open 12 | 2021-08-06 |
| Gao, Oscar | Harvey, Corbin | 0-1 | B30 | World Youth Cup 2021 O12-G16 - Open 12 | 2021-08-06 |
| Gao, Oscar | Lavrishchev, Matvei | 1-0 | C07 | World Youth Cup 2021 O12-G16 - Open 12 | 2021-08-06 |
| Gao, Oscar | Prasad, Lalit | 1/2-1/2 | B21 | 2024 Sydney Open Chess Championships |