| Tournament | Round | Betty Irwin | Michael Adler |
| 05.12.1999 ACT Christmas Capers (ACT) | 3 | 313 | 437 |
| 21.05.2000 Ulladulla (NSW) | 10 | 289 | 385 |
| 17.06.2000 Wollongong Marj Babb (NSW) | 2 | 268 | 443 |
| 24.11.2002 ACT Championships (ACT) | 7 | 306 | 473 |
| 20.05.2007 Ulladulla 2007 (NSW) | 2 | 384 | 314 |
| 06.11.2010 Nowra (NSW) | 10 | 353 | 354 |
| Head-to-head after 6 games | 1 | 5 | |
| Average score | 318.83 | 401 | |
| Spread: | -493 | 493 | |