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