| Tournament | Round | Zina Costanzo | Paul Richards |
| 22.04.2000 Australian Championships (QLD) | 3 | 363 | 289 |
| 29.06.2000 Bordertown (SA) | 1 | 444 | 279 |
| 29.06.2000 Bordertown (SA) | 12 | 395 | 373 |
| 27.01.2002 City of Sydney International Masters (NSW) | 13 | 309 | 366 |
| 21.04.2003 Australian Championships (SA) | 3 | 351 | 324 |
| 14.06.2004 Victorian Championships (VIC) | 15 | 267 | 557 |
| 28.12.2006 Decathon (VIC) | 3 | 381 | 441 |
| 11.06.2007 Victorian Championships (VIC) | 17 | 421 | 357 |
| Head-to-head after 8 games | 5 | 3 | |
| Average score | 366.37 | 373.25 | |
| Spread: | -55 | 55 | |