| Tournament | Round | Karen Harris | Marisa Nuccitelli |
| 11.09.2005 World Scrabble Championships Fundraiser (VIC) | 8 | 313 | 380 |
| 26.07.2009 Nunawading (VIC) | 2 | 446 | 272 |
| 29.04.2018 Nunawading (VIC) | 1 | 391 | 367 |
| Head-to-head after 3 games | 2 | 1 | |
| Average score | 383.33 | 339.66 | |
| Spread: | 131 | -131 | |