| Tournament | Round | Mary Mackie | Helene Slode |
| 16.05.1998 Dandenong (VIC) | 4 | 322 | 359 |
| 27.09.1998 Essendon (VIC) | 6 | 321 | 376 |
| 17.01.1999 Bil Rose Aestival (VIC) | 3 | 282 | 383 |
| 17.04.1999 Knox-Gully (VIC) | 5 | 358 | 320 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 320.75 | 359.5 | |
| Spread: | -155 | 155 | |