| Tournament | Round | Mary McMahon | Sue Kyatt |
| 28.12.1998 Decathon (VIC) | 13 | 392 | 371 |
| 12.06.2000 Victorian Championships (VIC) | 2 | 314 | 403 |
| 31.12.2000 Odyssey (VIC) | 2 | 415 | 406 |
| 16.04.2001 Australian Championships (VIC) | 18 | 432 | 325 |
| 24.02.2002 Camberwell (VIC) | 5 | 471 | 287 |
| 25.08.2002 Eastern Suburbs (VIC) | 3 | 365 | 372 |
| 20.03.2005 Langwarrin (VIC) | 6 | 362 | 360 |
| 13.06.2005 Victorian Championships (VIC) | 2 | 396 | 383 |
| 25.09.2005 Essendon (VIC) | 1 | 382 | 432 |
| 17.04.2006 Australian Championships (QLD) | 5 | 419 | 436 |
| 02.07.2006 Bentleigh (VIC) | 4 | 374 | 337 |
| 18.02.2007 Camberwell (VIC) | 3 | 345 | 421 |
| Head-to-head after 12 games | 7 | 5 | |
| Average score | 388.91 | 377.75 | |
| Spread: | 134 | -134 | |