| Date | Tournament | State | Round | Mary McMahon | Ian Newton |
|---|---|---|---|---|---|
| 10/08/1997 | Jolly Roger | VIC | 4 | 426 | 367 |
| 07/02/1999 | Ballarat | VIC | 6 | 370 | 402 |
| 23/01/2000 | Aestival | VIC | 4 | 430 | 308 |
| 15/10/2000 | Frankston | VIC | 3 | 415 | 241 |
| 23/06/2002 | Nunawading | VIC | 6 | 341 | 448 |
| 18/05/2003 | Dandenong | VIC | 3 | 343 | 353 |
| 08/06/2003 | Victorian Championships | VIC | 10 | 372 | 294 |
| 27/07/2003 | Bentleigh | VIC | 6 | 379 | 360 |
| 20/03/2005 | Langwarrin | VIC | 1 | 310 | 507 |
| 15/01/2006 | Aestival | VIC | 4 | 449 | 343 |
| 24/07/2011 | Nunawading | VIC | 6 | 408 | 342 |
| Head-to-head after 11 games | 7 | 4 | |||
| Average score | 385.73 | 360.45 | |||
| Spread | 278 | -278 | |||