| Tournament | Round | Steve Sunter | Zina Costanzo |
| 21.01.1999 City of Sydney Masters (NSW) | 2 | 439 | 296 |
| 12.06.2000 Victorian Championships (VIC) | 9 | 395 | 362 |
| 29.12.2001 Decathon (VIC) | 9 | 286 | 372 |
| 16.11.2002 Melbourne November (VIC) | 8 | 100 | 300 |
| 29.12.2002 Decathon (VIC) | 7 | 365 | 379 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 317 | 341.8 | |