| Tournament | Round | Joan Thomas | Merle Holding |
| 22.02.1998 Ballarat (VIC) | 1 | 282 | 351 |
| 07.02.1999 Ballarat (VIC) | 2 | 314 | 339 |
| 04.03.2001 Bendigo (VIC) | 3 | 303 | 308 |
| 3.03.2002 Bendigo (VIC) | 6 | 326 | 320 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 306.25 | 329.5 | |
| Spread: | -93 | 93 | |