| Tournament | Round | Joan Riley | Mary Dixon |
| 05.07.1998 Southern Tasmania (TAS) | 1 | 401 | 237 |
| 05.07.1998 Southern Tasmania (TAS) | 12 | 394 | 295 |
| 19.09.1998 Tasmanian Championships (TAS) | 7 | 391 | 318 |
| 31.10.1999 Tasmanian Championships (TAS) | 9 | 360 | 395 |
| 21.05.2000 May (TAS) | 1 | 366 | 343 |
| Head-to-head after 5 games | 4 | 1 | |
| Average score | 382.4 | 317.6 | |
| Spread: | 324 | -324 | |