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