| Date | Tournament | State | 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 | 375.00 | |||
| Spread | -550 | 550 | |||