| Tournament | Round | Karen Richards | Derek McKenzie |
| 23.08.1998 Queensland Championships (QLD) | 4 | 313 | 428 |
| 04.10.1999 New South Wales Championships (NSW) | 1 | 379 | 340 |
| 30.04.2000 Auran Round Robin (QLD) | 5 | 322 | 403 |
| 26.08.2001 Queensland Championships (QLD) | 3 | 405 | 410 |
| 26.08.2001 Queensland Championships (QLD) | 17 | 333 | 396 |
| 21.07.2002 Winter Masters (NSW) | 2 | 292 | 411 |
| 23.02.2008 Early Warm-Up (QLD) | 7 | 426 | 411 |
| 24.03.2008 Australian Championship (VIC) | 11 | 408 | 425 |
| 29.08.2010 Qld Championships (QLD) | 12 | 362 | 381 |
| 11.08.2019 Qld Championships (QLD) | 7 | 380 | 505 |
| Head-to-head after 10 games | 2 | 8 | |
| Average score | 362 | 411 | |
| Spread: | -490 | 490 | |