| Tournament | Round | Derek McKenzie | Jean Noonan |
| 25.01.1998 City of Sydney International Masters (NSW) | 18 | 354 | 335 |
| 29.03.1998 Wyong (NSW) | 4 | 388 | 376 |
| 20.06.1998 Wollongong Marj Babb (NSW) | 2 | 351 | 389 |
| 24.10.1998 Spring Marathon (NSW) | 1 | 433 | 299 |
| 12.12.1998 North Shore (NSW) | 2 | 400 | 428 |
| Head-to-head after 5 games | 3 | 2 | |
| Average score | 385.2 | 365.4 | |
| Spread: | 99 | -99 | |