| Tournament | Round | Jon Strang | Betty Irwin |
| 05.06.1999 Wollongong Marj Babb (NSW) | 5 | 312 | 313 |
| 31.10.2009 Nowra 2009 (NSW) | 11 | 317 | 293 |
| 18.09.2010 Ulladulla 2010 (NSW) | 10 | 337 | 427 |
| 06.11.2010 Nowra (NSW) | 2 | 375 | 382 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 335.25 | 353.75 | |
| Spread: | -74 | 74 | |