| Date | Tournament | State | Round | Alastair Richards | Mary McMahon |
|---|---|---|---|---|---|
| 07/03/2004 | South Australian Championships | SA | 4 | 486 | 389 |
| 07/03/2004 | South Australian Championships | SA | 14 | 399 | 403 |
| 17/04/2006 | Australian Championships | QLD | 7 | 385 | 404 |
| 17/04/2006 | Australian Championships | QLD | 21 | 433 | 318 |
| 10/06/2006 | vic06 3 DAY | VIC | 24 | 341 | 369 |
| 11/06/2007 | Victorian Championships | VIC | 17 | 439 | 342 |
| 29/12/2009 | DECATHON | VIC | 2 | 434 | 375 |
| 27/06/2010 | Trans Tasman Support | VIC | 5 | 467 | 367 |
| 28/03/2016 | Australian Championship | SA | 5 | 471 | 288 |
| Head-to-head after 9 games | 6 | 3 | |||
| Average score | 428.33 | 361.67 | |||
| Spread | 600 | -600 | |||