| Tournament | Round | Brian Irwin | Betty Irwin |
| 09.12.2001 ACT Championships (ACT) | 1 | 305 | 336 |
| 15.03.2009 Bomaderry March 2009 (NSW) | 8 | 304 | 325 |
| 16.05.2009 Ulladulla (NSW) | 8 | 347 | 299 |
| 31.10.2009 Nowra 2009 (NSW) | 1 | 326 | 332 |
| 18.09.2010 Ulladulla 2010 (NSW) | 7 | 277 | 436 |
| 06.11.2010 Nowra (NSW) | 4 | 276 | 379 |
| 15.05.2011 Ulladulla (NSW) | 6 | 348 | 370 |
| 20.05.2012 Ulladulla (NSW) | 10 | 267 | 523 |
| Head-to-head after 8 games | 1 | 7 | |
| Average score | 306.25 | 375 | |
| Spread: | -550 | 550 | |