| Tournament | Round | Karen Richards | Mary McMahon |
| 08.06.1998 Victorian Championships (VIC) | 3 | 380 | 417 |
| 05.04.1999 Australian Championships (NSW) | 13 | 345 | 350 |
| 12.09.1999 Victorian Country Championships (VIC) | 6 | 221 | 555 |
| 28.12.1999 Decathon (VIC) | 2 | 328 | 424 |
| 12.06.2000 Victorian Championships (VIC) | 12 | 379 | 374 |
| 09.06.2001 Victorian Championships (VIC) | 5 | 437 | 360 |
| 10.06.2002 Victorian Championships (VIC) | 5 | 363 | 374 |
| 10.06.2006 vic06 3 DAY (VIC) | 17 | 320 | 418 |
| 28.03.2016 Australian Championship (SA) | 6 | 398 | 323 |
| Head-to-head after 9 games | 3 | 6 | |
| Average score | 352.33 | 399.44 | |
| Spread: | -424 | 424 | |