| Tournament | Round | Zina Costanzo | Kris Howat |
| 06.12.1998 Brighton (VIC) | 4 | 320 | 389 |
| 23.05.1999 Dandenong (VIC) | 3 | 499 | 257 |
| 19.11.2000 Geelong (VIC) | 1 | 450 | 315 |
| 25.08.2002 Eastern Suburbs (VIC) | 7 | 420 | 266 |
| 19.01.2003 Bil Rose Aestival (VIC) | 6 | 350 | 335 |
| Head-to-head after 5 games | 4 | 1 | |
| Average score | 407.8 | 312.39 | |
| Spread: | 477 | -477 | |