| Tournament | Round | Melva Lehmann | Betty Mitchell |
| 20.08.2000 Unley (SA) | 1 | 402 | 360 |
| 07.11.2002 September (SA) | 1 | 459 | 273 |
| 21.06.2003 Unley June (SA) | 5 | 331 | 349 |
| 20.07.2003 Hove (SA) | 4 | 330 | 394 |
| 10.08.2003 Unley August (SA) | 2 | 446 | 322 |
| 13.09.2003 Southern Tournament (SA) | 5 | 426 | 307 |
| 08.02.2004 February Open (SA) | 6 | 318 | 336 |
| 07.03.2004 South Australian Championships (SA) | 13 | 436 | 268 |
| 29.08.2004 Unley August (SA) | 3 | 341 | 336 |
| 18.09.2004 Southern Tournament (SA) | 5 | 365 | 344 |
| 16.10.2004 Unley October (SA) | 2 | 449 | 305 |
| 12.03.2006 South Australian Championships (SA) | 4 | 231 | 498 |
| 19.08.2006 SA August Tournament (SA) | 6 | 407 | 361 |
| Head-to-head after 13 games | 9 | 4 | |
| Average score | 380.07 | 342.53 | |
| Spread: | 488 | -488 | |