| Tournament | Round | Olga Visser | Tim Walton |
| 13.08.2006 Magnetic Island Sun (QLD) | 3 | 445 | 252 |
| 02.08.2009 Townsville Sunday (QLD) | 3 | 374 | 294 |
| 09.08.2009 Magnetic Island Sunday (QLD) | 1 | 390 | 304 |
| 04.08.2012 Townsville Saturday (QLD) | 6 | 402 | 256 |
| 12.08.2012 Maggie Sunday (QLD) | 6 | 349 | 370 |
| 24.08.2013 Cairns Saturday (QLD) | 3 | 329 | 412 |
| 16.04.2022 Australian Championship (QLD) | 2 | 401 | 346 |
| 19.08.2023 Qld Champs (QLD) | 9 | 362 | 366 |
| 27.07.2024 Saturday Townsville (QLD) | 1 | 407 | 411 |
| 17.04.2025 Warmup (SA) | 2 | 446 | 441 |
| 19.04.2025 National Championship and Plate (SA) | 6 | 344 | 427 |
| 13.08.2025 Magnetic Island Wednesday (QLD) | 4 | 442 | 388 |
| Head-to-head after 12 games | 7 | 5 | |
| Average score | 390.91 | 355.58 | |
| Spread: | 424 | -424 | |