| Tournament | Round | Chris Ostrowski | Tony Williams |
| 03.01.2009 Janboree (NSW) | 6 | 328 | 392 |
| 04.11.2012 Nowra (NSW) | 5 | 384 | 318 |
| 04.11.2012 Nowra (NSW) | 14 | 362 | 431 |
| 21.07.2013 Winter Masters (NSW) | 11 | 394 | 274 |
| 10.11.2013 ACT CHAMPIONSHIPS (ACT) | 10 | 329 | 417 |
| 08.02.2014 WORDS FEB (NSW) | 1 | 348 | 407 |
| 18.05.2014 Ulladulla (NSW) | 2 | 350 | 401 |
| 26.01.2015 City of Sydney International Masters (NSW) | 5 | 430 | 346 |
| 14.03.2015 Bomaderry (NSW) | 2 | 507 | 430 |
| 06.11.2016 Nowra 10th Annual (NSW) | 7 | 422 | 244 |
| 06.11.2016 Nowra 10th Annual (NSW) | 11 | 372 | 381 |
| 11.03.2017 Bomaderry (NSW) | 7 | 454 | 310 |
| 11.03.2017 Bomaderry (NSW) | 8 | 428 | 439 |
| 21.05.2017 ULLADULLA (NSW) | 3 | 507 | 377 |
| 17.06.2017 WORDS WINTER (NSW) | 3 | 408 | 355 |
| 04.11.2017 NOWRA (NSW) | 1 | 404 | 460 |
| 04.11.2017 NOWRA (NSW) | 11 | 453 | 335 |
| 10.02.2018 WORDS Summer RR (NSW) | 3 | 435 | 399 |
| 16.06.2018 JUNE WGONG (NSW) | 2 | 430 | 391 |
| 28.01.2019 City Of Sydney International Masters (NSW) | 7 | 374 | 369 |
| 15.01.2022 bundanoon (NSW) | 4 | 355 | 418 |
| 03.12.2022 SUTHERLAND CLUB (NSW) | 8 | 367 | 404 |
| 04.04.2026 AUS CHAMPS (ACT) | 5 | 311 | 342 |
| Head-to-head after 23 games | 12 | 11 | |
| Average score | 397.91 | 375.65 | |