| Date | Tournament | State | Round | Betty Irwin | Brian Irwin |
|---|---|---|---|---|---|
| 09/12/2001 | ACT Championships | ACT | 1 | 336 | 305 |
| 15/03/2009 | Bomaderry March 2009 | NSW | 8 | 325 | 304 |
| 16/05/2009 | Ulladulla | NSW | 8 | 299 | 347 |
| 31/10/2009 | Nowra 2009 | NSW | 1 | 332 | 326 |
| 18/09/2010 | Ulladulla 2010 | NSW | 7 | 436 | 277 |
| 06/11/2010 | Nowra | NSW | 4 | 379 | 276 |
| 15/05/2011 | Ulladulla | NSW | 6 | 370 | 348 |
| 20/05/2012 | Ulladulla | NSW | 10 | 523 | 267 |
| Head-to-head after 8 games | 7 | 1 | |||
| Average score | 375.00 | 306.25 | |||
| Spread | 550 | -550 | |||