| Tournament | Round | Dianne Davis | Zina Costanzo |
| 11.02.2001 Ballarat (VIC) | 5 | 411 | 363 |
| 05.08.2001 Knox (VIC) | 6 | 436 | 297 |
| 10.03.2003 White Rabbit (VIC) | 1 | 322 | 426 |
| 28.09.2003 Essendon (VIC) | 1 | 355 | 393 |
| 30.11.2003 McKinnon (VIC) | 5 | 403 | 374 |
| 28.12.2003 Decathon (VIC) | 7 | 352 | 390 |
| 14.11.2004 Geelong (VIC) | 6 | 441 | 463 |
| 13.05.2006 MAYDAY & NIGHT (VIC) | 4 | 354 | 423 |
| 01.10.2006 Essendon (VIC) | 6 | 418 | 354 |
| 21.01.2007 AESTIVAL FESTIVAL 2007 (VIC) | 4 | 352 | 387 |
| 20.01.2008 Aestival Festival (VIC) | 2 | 330 | 342 |
| 28.09.2008 Essendon (VIC) | 6 | 377 | 390 |
| Head-to-head after 12 games | 4 | 8 | |
| Average score | 379.25 | 383.5 | |
| Spread: | -51 | 51 | |