| Tournament | Round | Julie Gardiner | Derek McKenzie |
| 23.08.1998 Queensland Championships (QLD) | 8 | 382 | 408 |
| 21.02.1999 Ipswich (QLD) | 3 | 420 | 374 |
| 02.05.1999 Maelstrom (QLD) | 7 | 400 | 470 |
| 21.08.1999 Queensland Championships (QLD) | 8 | 334 | 402 |
| 26.08.2001 Queensland Championships (QLD) | 1 | 320 | 461 |
| 25.08.2002 Queensland Championships (QLD) | 15 | 310 | 404 |
| 23.02.2008 Early Warm-Up (QLD) | 2 | 282 | 409 |
| 04.05.2008 Queensland Championships (QLD) | 9 | 334 | 433 |
| Head-to-head after 8 games | 1 | 7 | |
| Average score | 347.75 | 420.12 | |
| Spread: | -579 | 579 | |