| Date | Tournament | State | Round | Mary McMahon | Doug Ristic |
|---|---|---|---|---|---|
| 14/09/2002 | Melbourne 15 Minutes | VIC | 8 | 332 | 373 |
| 28/01/2007 | Ballarat Summer | VIC | 2 | 457 | 277 |
| 28/01/2012 | Ballarat Summer | VIC | 6 | 348 | 359 |
| 19/08/2012 | Midwinter | VIC | 2 | 481 | 317 |
| 19/07/2015 | Matchplay 2015 | VIC | 5 | 388 | 291 |
| Head-to-head after 5 games | 3 | 2 | |||
| Average score | 401.20 | 323.40 | |||
| Spread | 389 | -389 | |||