| Tournament | Round | Arnold Appelhof | Chris Ostrowski |
| 31.07.2016 Winter Masters (NSW) | 8 | 393 | 393 |
| 31.07.2016 Winter Masters (NSW) | 11 | 351 | 383 |
| 17.04.2017 National Championship (WA) | 11 | 316 | 407 |
| 17.04.2017 National Championship (WA) | 16 | 337 | 364 |
| 02.04.2018 2018 National Championship (ACT) | 19 | 342 | 404 |
| 01.10.2018 NSW Champs (NSW) | 12 | 348 | 434 |
| 28.01.2019 City Of Sydney International Masters (NSW) | 13 | 449 | 353 |
| 27.01.2020 City of Sydney International Masters (NSW) | 7 | 320 | 417 |
| 27.01.2020 City of Sydney International Masters (NSW) | 17 | 352 | 433 |
| 03.04.2021 OZ CHAMPS (NSW) | 11 | 315 | 398 |
| 03.04.2021 OZ CHAMPS (NSW) | 15 | 384 | 340 |
| 16.04.2022 Australian Championship (QLD) | 7 | 296 | 359 |
| 16.04.2022 Australian Championship (QLD) | 14 | 370 | 407 |
| 02.07.2022 NO FRILLS 3 (NSW) | 7 | 356 | 370 |
| 03.10.2022 2022 NSW CHAMPIONSHIP (NSW) | 20 | 372 | 290 |
| 06.11.2022 Revesby Round Robin (NSW) | 1 | 371 | 414 |
| 28.01.2024 CSIM 2024 (NSW) | 9 | 351 | 392 |
| 26.01.2025 CITY OF SYDNEY MASTERS (NSW) | 3 | 357 | 348 |
| 06.10.2025 NSW CHAMPIONSHIP 2025 (NSW) | 20 | 424 | 314 |
| Head-to-head after 19 games | 5.5 | 13.5 | |
| Average score | 358.1 | 380 | |
| Spread: | -416 | 416 | |