| Tournament | Round | Alex Lam | Chris Ostrowski |
| 13.11.2021 2021 NSW Championship (NSW) | 6 | 473 | 343 |
| 30.01.2022 City of Sydney Masters (NSW) | 5 | 395 | 381 |
| 03.10.2022 2022 NSW CHAMPIONSHIP (NSW) | 18 | 299 | 352 |
| 07.01.2023 JANBOREE (NSW) | 2 | 398 | 372 |
| 29.01.2023 CSIM2023 (NSW) | 5 | 430 | 456 |
| 29.01.2023 CSIM2023 (NSW) | 18 | 354 | 417 |
| 06.01.2024 JANBOREE (NSW) | 6 | 353 | 350 |
| 04.01.2025 JanBoree (NSW) | 6 | 304 | 412 |
| Head-to-head after 8 games | 4 | 4 | |
| Average score | 375.75 | 385.37 | |
| Spread: | -77 | 77 | |