| Tournament | Round | John Spaan | Chris Ostrowski |
| 24.02.2018 Bomaderry (NSW) | 5 | 425 | 336 |
| 02.04.2018 2018 National Championship (ACT) | 8 | 433 | 322 |
| 20.05.2018 Ulladulla (NSW) | 12 | 421 | 358 |
| 15.12.2018 Bundanoon (NSW) | 7 | 317 | 353 |
| 14.01.2023 Bundanoon (NSW) | 8 | 380 | 284 |
| 09.12.2023 Bundanoon 2023 (NSW) | 9 | 353 | 275 |
| Head-to-head after 6 games | 5 | 1 | |
| Average score | 388.16 | 321.33 | |
| Spread: | 401 | -401 | |