| Tournament | Round | Margaret Sella | Gillian Briggs |
| 24.10.1999 October (SA) | 4 | 366 | 272 |
| 24.07.2000 July (SA) | 2 | 421 | 452 |
| 09.02.2001 Unley February (SA) | 2 | 479 | 441 |
| 15.07.2001 July (SA) | 2 | 377 | 392 |
| 09.03.2002 South Australian Championships (SA) | 14 | 334 | 351 |
| 25.05.2002 Northern Tournament (SA) | 4 | 403 | 342 |
| 12.01.2003 Open (SA) | 5 | 436 | 414 |
| 08.03.2003 South Australian Championships (SA) | 3 | 360 | 385 |
| 20.07.2003 Hove (SA) | 1 | 416 | 444 |
| 26.10.2003 Unley October (SA) | 6 | 447 | 357 |
| 15.11.2003 Unley November (SA) | 1 | 484 | 279 |
| 30.05.2004 Northern Tournament (SA) | 4 | 371 | 467 |
| 28.03.2005 Australian Championships (TAS) | 14 | 447 | 329 |
| 05.02.2006 Round Robin (SA) | 6 | 373 | 436 |
| 17.04.2006 Australian Championships (QLD) | 18 | 410 | 326 |
| 18.08.2007 August Tournament (SA) | 3 | 379 | 317 |
| Head-to-head after 16 games | 9 | 7 | |
| Average score | 406.43 | 375.25 | |
| Spread: | 499 | -499 | |