| Date | Tournament | State | Round | Betty Mitchell | Melva Lehmann |
|---|---|---|---|---|---|
| 20/08/2000 | Unley | SA | 1 | 360 | 402 |
| 07/11/2002 | September | SA | 1 | 273 | 459 |
| 21/06/2003 | Unley June | SA | 5 | 349 | 331 |
| 20/07/2003 | Hove | SA | 4 | 394 | 330 |
| 10/08/2003 | Unley August | SA | 2 | 322 | 446 |
| 13/09/2003 | Southern Tournament | SA | 5 | 307 | 426 |
| 08/02/2004 | February Open | SA | 6 | 336 | 318 |
| 07/03/2004 | South Australian Championships | SA | 13 | 268 | 436 |
| 29/08/2004 | Unley August | SA | 3 | 336 | 341 |
| 18/09/2004 | Southern Tournament | SA | 5 | 344 | 365 |
| 16/10/2004 | Unley October | SA | 2 | 305 | 449 |
| 12/03/2006 | South Australian Championships | SA | 4 | 498 | 231 |
| 19/08/2006 | SA August Tournament | SA | 6 | 361 | 407 |
| Head-to-head after 13 games | 4 | 9 | |||
| Average score | 342.54 | 380.08 | |||
| Spread | -488 | 488 | |||