| Tournament | Round | Marion Merickel | Wayne Willis |
| 25.04.2011 Aus Championship (ACT) | 19 | 422 | 388 |
| 09.04.2012 Australian Championship (TAS) | 6 | 320 | 362 |
| 28.03.2016 Australian Championship (SA) | 4 | 413 | 292 |
| Head-to-head after 3 games | 2 | 1 | |
| Average score | 385 | 347.33 | |
| Spread: | 113 | -113 | |