| Tournament | Round | Nigel Wilkinson | Melva Lehmann |
| 22.02.1998 Unley February (SA) | 5 | 362 | 237 |
| 29.03.1998 Unley (SA) | 5 | 362 | 237 |
| 12.09.1998 September (SA) | 6 | 417 | 277 |
| 25.10.1998 October (SA) | 4 | 290 | 505 |
| 14.02.1999 South Australian Championships (SA) | 10 | 379 | 407 |
| 24.07.2000 July (SA) | 1 | 387 | 350 |
| 22.11.2000 Unley November (SA) | 1 | 416 | 330 |
| 18.08.2002 August (SA) | 2 | 307 | 413 |
| 20.10.2002 October (SA) | 1 | 303 | 382 |
| 16.11.2002 November (SA) | 1 | 382 | 330 |
| 15.02.2003 Unley February (SA) | 1 | 332 | 408 |
| 10.08.2003 Unley August (SA) | 4 | 350 | 330 |
| 07.03.2004 South Australian Championships (SA) | 9 | 331 | 329 |
| 07.03.2004 South Australian Championships (SA) | 14 | 367 | 266 |
| 29.08.2004 Unley August (SA) | 1 | 336 | 377 |
| 18.09.2004 Southern Tournament (SA) | 1 | 289 | 422 |
| 20.02.2005 February (SA) | 5 | 451 | 338 |
| 22.05.2005 May (SA) | 5 | 366 | 316 |
| 12.03.2006 South Australian Championships (SA) | 9 | 461 | 284 |
| Head-to-head after 19 games | 12 | 7 | |
| Average score | 362.52 | 344.1 | |