| Tournament | Round | Ian Newton | Mary McMahon |
| 07.02.1999 Ballarat (VIC) | 6 | 402 | 370 |
| 23.01.2000 Aestival (VIC) | 4 | 308 | 430 |
| 15.10.2000 Frankston (VIC) | 3 | 241 | 415 |
| 23.06.2002 Nunawading (VIC) | 6 | 448 | 341 |
| 18.05.2003 Dandenong (VIC) | 3 | 353 | 343 |
| 08.06.2003 Victorian Championships (VIC) | 10 | 294 | 372 |
| 27.07.2003 Bentleigh (VIC) | 6 | 360 | 379 |
| 20.03.2005 Langwarrin (VIC) | 1 | 507 | 310 |
| 15.01.2006 Aestival (VIC) | 4 | 343 | 449 |
| 24.07.2011 Nunawading (VIC) | 6 | 342 | 408 |
| Head-to-head after 10 games | 4 | 6 | |
| Average score | 359.8 | 381.7 | |
| Spread: | -219 | 219 | |