| Tournament | Round | Brian Irwin | Merriss Adler |
| 20.06.1998 Wollongong Marj Babb (NSW) | 4 | 336 | 316 |
| 21.05.1999 Ulladulla (NSW) | 10 | 312 | 309 |
| 21.05.2000 Ulladulla (NSW) | 6 | 295 | 294 |
| 27.05.2001 Ulladulla (NSW) | 13 | 344 | 353 |
| 09.12.2001 ACT Championships (ACT) | 9 | 352 | 247 |
| 26.05.2002 Ulladulla (NSW) | 3 | 269 | 308 |
| 24.11.2002 ACT Championships (ACT) | 10 | 303 | 339 |
| 22.02.2003 Wollongong (NSW) | 7 | 373 | 300 |
| 15.05.2003 Ulladulla (NSW) | 2 | 351 | 265 |
| 23.11.2003 ACT Championships (ACT) | 3 | 259 | 305 |
| 22.05.2005 Ulladulla (NSW) | 11 | 352 | 294 |
| Head-to-head after 11 games | 7 | 4 | |
| Average score | 322.36 | 302.72 | |