| Tournament | Round | Nigel Wilkinson | Betty Keese |
| 22.08.1999 August (SA) | 2 | 337 | 303 |
| 19.03.2000 March (SA) | 1 | 406 | 354 |
| 09.03.2002 South Australian Championships (SA) | 6 | 349 | 373 |
| 17.07.2005 July (SA) | 5 | 377 | 331 |
| 11.09.2005 September (SA) | 2 | 272 | 400 |
| 15.10.2005 October (SA) | 5 | 329 | 329 |
| 12.03.2006 South Australian Championships (SA) | 5 | 354 | 324 |
| 04.02.2007 SA February Tournament (SA) | 4 | 332 | 351 |
| 11.03.2007 South Australian Championships (SA) | 4 | 348 | 371 |
| 22.07.2007 SA July Tournament (SA) | 4 | 307 | 510 |
| 21.09.2008 SA September Tournament (SA) | 5 | 357 | 388 |
| 23.11.2008 SA November (SA) | 5 | 379 | 327 |
| 14.11.2009 Southern Tournament (SA) | 4 | 366 | 335 |
| Head-to-head after 13 games | 6.5 | 6.5 | |
| Average score | 347.15 | 361.23 | |
| Spread: | -183 | 183 | |