| Tournament | Round | Derek McKenzie | Sue Gergelifi |
| 26.07.1998 Winter Masters (NSW) | 4 | 312 | 455 |
| 05.10.1998 New South Wales Championships (NSW) | 1 | 354 | 342 |
| 04.10.1999 New South Wales Championships (NSW) | 8 | 440 | 365 |
| Head-to-head after 3 games | 2 | 1 | |
| Average score | 368.66 | 387.33 | |
| Spread: | -56 | 56 | |