| Tournament | Round | Margot Carnachan | Joan Watson |
| 29.10.2006 Mindbenders Sunday (QLD) | 6 | 401 | 365 |
| 26.10.2008 Mindbenders Sunday (QLD) | 4 | 374 | 471 |
| 29.08.2009 Qld Champs Sat (QLD) | 1 | 429 | 313 |
| 15.08.2010 Almost Cheap (QLD) | 6 | 420 | 376 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 406 | 381.25 | |
| Spread: | 99 | -99 | |