| Tournament | Round | Liz Marx | Sal Costanzo |
| 28.12.1999 Decathon (VIC) | 8 | 423 | 372 |
| 22.04.2000 Australian Championships (QLD) | 10 | 402 | 343 |
| 12.06.2000 Victorian Championships (VIC) | 8 | 341 | 324 |
| 29.06.2000 Bordertown (SA) | 11 | 314 | 360 |
| 29.06.2000 Bordertown (SA) | 12 | 340 | 404 |
| 09.06.2001 Victorian Championships (VIC) | 8 | 337 | 455 |
| 03.11.2002 SA/Victoria Border Challenge Dimboola (VIC) | 7 | 293 | 402 |
| Head-to-head after 7 games | 3 | 4 | |
| Average score | 350 | 380 | |
| Spread: | -210 | 210 | |