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