| Tournament | Round | Win McKenna | Zina Costanzo |
| 27.09.1998 Essendon (VIC) | 3 | 323 | 348 |
| 28.12.1998 Decathon (VIC) | 5 | 370 | 382 |
| 07.02.1999 Ballarat (VIC) | 6 | 279 | 433 |
| 22.07.2000 Melbourne Open (VIC) | 6 | 399 | 335 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 342.75 | 374.5 | |
| Spread: | -127 | 127 | |