| Tournament | Round | Julie Gardiner | Joan Colburt |
| 17.05.1998 Southport Winter (QLD) | 1 | 433 | 398 |
| 23.08.1998 Queensland Championships (QLD) | 4 | 463 | 360 |
| 15.11.1998 Oyez (QLD) | 4 | 364 | 421 |
| 02.05.1999 Maelstrom (QLD) | 2 | 383 | 355 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 410.75 | 383.5 | |
| Spread: | 109 | -109 | |