| Tournament | Round | Brian Irwin | Diana Field |
| 13.02.1999 Wollongong (NSW) | 2 | 257 | 279 |
| 05.12.1999 ACT Christmas Capers (ACT) | 2 | 247 | 364 |
| 17.02.2001 Wollongong WORDS February Frolic (NSW) | 6 | 344 | 287 |
| 27.05.2001 Ulladulla (NSW) | 8 | 351 | 292 |
| 23.02.2002 Wollongong (NSW) | 1 | 377 | 283 |
| 26.05.2002 Ulladulla (NSW) | 11 | 342 | 363 |
| 16.03.2003 Wyong (NSW) | 6 | 305 | 315 |
| 23.11.2003 ACT Championships (ACT) | 9 | 421 | 272 |
| 21.03.2004 Wyong (NSW) | 3 | 301 | 361 |
| 22.05.2005 Ulladulla (NSW) | 9 | 308 | 242 |
| 17.06.2005 Wollongong Marj Babb (NSW) | 4 | 367 | 310 |
| 11.09.2005 Hills Open (NSW) | 5 | 286 | 314 |
| 11.02.2006 Wollongong (NSW) | 7 | 396 | 222 |
| 28.05.2006 Ulladulla Championship (NSW) | 5 | 351 | 211 |
| 17.06.2006 Wollongong Marj Babb (NSW) | 4 | 328 | 261 |
| 20.05.2007 Ulladulla 2007 (NSW) | 6 | 358 | 251 |
| Head-to-head after 16 games | 10 | 6 | |
| Average score | 333.68 | 289.18 | |