| Tournament | Round | Joan Colburt | Joy McGowan |
| 03.05.1998 Maelstrom (QLD) | 3 | 505 | 323 |
| 13.09.1998 Toowoomba (QLD) | 4 | 302 | 464 |
| 11.10.1998 Greenbank (QLD) | 5 | 339 | 443 |
| 15.11.1998 Oyez (QLD) | 1 | 550 | 299 |
| 21.03.1999 Redcliffe (QLD) | 6 | 317 | 370 |
| 02.05.1999 Maelstrom (QLD) | 1 | 376 | 412 |
| Head-to-head after 6 games | 2 | 4 | |
| Average score | 398.16 | 385.16 | |
| Spread: | 78 | -78 | |