| Tournament | Round | Dianne Davis | Tony Williams |
| 01.04.2013 Australian Championship (QLD) | 7 | 388 | 353 |
| 28.03.2016 Australian Championship (SA) | 9 | 416 | 362 |
| 18.09.2022 MASTERS and STATE CHALLENGE (VIC) | 5 | 385 | 253 |
| 19.04.2025 National Championship and Plate (SA) | 12 | 460 | 326 |
| Head-to-head after 4 games | 4 | 0 | |
| Average score | 412.25 | 323.5 | |
| Spread: | 355 | -355 | |