| Tournament | Round | Mary McMahon | Alan Stewart |
| 06.12.1998 Brighton (VIC) | 5 | 435 | 418 |
| 28.12.1998 Decathon (VIC) | 6 | 400 | 345 |
| 28.12.1998 Decathon (VIC) | 16 | 390 | 296 |
| 05.12.1999 McKinnon (VIC) | 3 | 432 | 317 |
| 06.02.2000 Ballarat (VIC) | 4 | 333 | 417 |
| 16.04.2001 Australian Championships (VIC) | 8 | 422 | 354 |
| 09.06.2001 Victorian Championships (VIC) | 13 | 327 | 378 |
| 25.05.2002 Bunny (VIC) | 4 | 435 | 284 |
| 14.09.2002 Melbourne 15 Minutes (VIC) | 1 | 369 | 363 |
| 23.07.2006 Midwinter (VIC) | 6 | 440 | 309 |
| Head-to-head after 10 games | 8 | 2 | |
| Average score | 398.3 | 348.1 | |
| Spread: | 502 | -502 | |