| Date | Tournament | State | Round | Betty Irwin | Jon Strang |
|---|---|---|---|---|---|
| 05/06/1999 | Wollongong Marj Babb | NSW | 5 | 313 | 312 |
| 31/10/2009 | Nowra 2009 | NSW | 11 | 293 | 317 |
| 18/09/2010 | Ulladulla 2010 | NSW | 10 | 427 | 337 |
| 06/11/2010 | Nowra | NSW | 2 | 382 | 375 |
| Head-to-head after 4 games | 3 | 1 | |||
| Average score | 353.75 | 335.25 | |||
| Spread | 74 | -74 | |||