| Tournament | Round | Zina Costanzo | Val Hardiman |
| 10.11.2002 Geelong (VIC) | 6 | 393 | 401 |
| 01.12.2002 McKinnon (VIC) | 4 | 359 | 510 |
| 11.09.2004 Raymond Island (VIC) | 1 | 438 | 395 |
| 01.05.2005 Mayday (VIC) | 3 | 370 | 455 |
| 20.01.2008 Aestival Festival (VIC) | 3 | 409 | 446 |
| Head-to-head after 5 games | 1 | 4 | |
| Average score | 393.8 | 441.4 | |
| Spread: | -238 | 238 | |