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