| Tournament | Round | Margot Carnachan | Roberta Tait |
| 29.08.2009 Qld Champs Sat (QLD) | 7 | 366 | 398 |
| 10.10.2010 Oktober Scrabblefest (QLD) | 6 | 334 | 396 |
| 12.03.2011 Redland Bay (QLD) | 5 | 393 | 341 |
| 09.02.2014 Alzheimer's FR Sunday (QLD) | 1 | 301 | 434 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 348.5 | 392.25 | |
| Spread: | -175 | 175 | |