| Tournament | Round | Dieter Jedamski | Janet Matthews |
| 10.07.2011 WYSC Fundraiser 1 (VIC) | 6 | 337 | 372 |
| 21.08.2021 Seaford August (SA) | 2 | 348 | 421 |
| 12.09.2021 SA September (SA) | 5 | 374 | 302 |
| 10.10.2021 Scrabble October (SA) | 1 | 325 | 269 |
| 03.09.2022 Seaford September (SA) | 2 | 576 | 259 |
| 11.02.2023 Seaford February (SA) | 1 | 365 | 321 |
| Head-to-head after 6 games | 4 | 2 | |
| Average score | 387.5 | 324 | |
| Spread: | 381 | -381 | |