| Tournament | Round | Claire Humzy | Betty Mitchell |
| 22.11.1998 Xmas (SA) | 4 | 343 | 277 |
| 14.02.1999 South Australian Championships (SA) | 5 | 362 | 350 |
| 21.03.1999 March (SA) | 2 | 347 | 328 |
| 18.07.2010 SA Pub July (SA) | 4 | 340 | 351 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 348 | 326.5 | |
| Spread: | 86 | -86 | |