| Date | Tournament | State | Round | Chris Ostrowski | Olga Visser |
|---|---|---|---|---|---|
| 04/10/2008 | NSW CHAMPIONSHIPS 08 | NSW | 1 | 360 | 484 |
| 05/10/2009 | NSW CHAMPIONSHIPS | NSW | 8 | 277 | 425 |
| 04/10/2010 | NSW Championships | NSW | 10 | 408 | 449 |
| 06/10/2014 | NSW Championships | NSW | 8 | 285 | 469 |
| 28/01/2024 | CSIM 2024 | NSW | 10 | 433 | 346 |
| 25/01/2026 | CITY OF SYDNEY MASTERS | NSW | 10 | 471 | 360 |
| Head-to-head after 6 games | 2 | 4 | |||
| Average score | 372.33 | 422.17 | |||
| Spread | -299 | 299 | |||