| Date | Tournament | State | Round | Joan Colburt | Olga Visser |
|---|---|---|---|---|---|
| 09/06/1996 | Milmerran | QLD | 6 | 409 | 426 |
| 03/05/1998 | Maelstrom | QLD | 6 | 451 | 293 |
| 17/05/1998 | Southport Winter | QLD | 6 | 339 | 406 |
| 11/10/1998 | Greenbank | QLD | 1 | 388 | 474 |
| 06/12/1998 | Southport | QLD | 6 | 444 | 377 |
| 02/05/1999 | Maelstrom | QLD | 5 | 362 | 441 |
| Head-to-head after 6 games | 2 | 4 | |||
| Average score | 398.83 | 402.83 | |||
| Spread | -24 | 24 | |||