| Tournament | Round | Liz Marx | Zina Costanzo |
| 28.12.1999 Decathon (VIC) | 15 | 316 | 340 |
| 12.06.2000 Victorian Championships (VIC) | 14 | 373 | 304 |
| 29.06.2000 Bordertown (SA) | 6 | 352 | 353 |
| 06.08.2000 Knox (VIC) | 5 | 258 | 469 |
| 27.08.2000 Bentleigh (VIC) | 1 | 408 | 303 |
| 03.11.2002 SA/Victoria Border Challenge Dimboola (VIC) | 11 | 367 | 419 |
| 14.09.2003 Melbourne Masters (VIC) | 2 | 365 | 399 |
| 02.11.2003 SA/Victoria Border Challenge Dimboola (VIC) | 3 | 317 | 419 |
| Head-to-head after 8 games | 2 | 6 | |
| Average score | 344.5 | 375.75 | |
| Spread: | -250 | 250 | |