| Tournament | Round | Doug Ristic | Mary McMahon |
| 14.09.2002 Melbourne 15 Minutes (VIC) | 8 | 373 | 332 |
| 28.01.2007 Ballarat Summer (VIC) | 2 | 277 | 457 |
| 28.01.2012 Ballarat Summer (VIC) | 6 | 359 | 348 |
| 19.08.2012 Midwinter (VIC) | 2 | 317 | 481 |
| 19.07.2015 Matchplay 2015 (VIC) | 5 | 291 | 388 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 323.39 | 401.2 | |
| Spread: | -389 | 389 | |