| Tournament | Round | Diana Field | Brian Irwin |
| 13.02.1999 Wollongong (NSW) | 2 | 279 | 257 |
| 05.12.1999 ACT Christmas Capers (ACT) | 2 | 364 | 247 |
| 17.02.2001 Wollongong WORDS February Frolic (NSW) | 6 | 287 | 344 |
| 27.05.2001 Ulladulla (NSW) | 8 | 292 | 351 |
| 23.02.2002 Wollongong (NSW) | 1 | 283 | 377 |
| 26.05.2002 Ulladulla (NSW) | 11 | 363 | 342 |
| 16.03.2003 Wyong (NSW) | 6 | 315 | 305 |
| 23.11.2003 ACT Championships (ACT) | 9 | 272 | 421 |
| 21.03.2004 Wyong (NSW) | 3 | 361 | 301 |
| 22.05.2005 Ulladulla (NSW) | 9 | 242 | 308 |
| 17.06.2005 Wollongong Marj Babb (NSW) | 4 | 310 | 367 |
| 11.09.2005 Hills Open (NSW) | 5 | 314 | 286 |
| 11.02.2006 Wollongong (NSW) | 7 | 222 | 396 |
| 28.05.2006 Ulladulla Championship (NSW) | 5 | 211 | 351 |
| 17.06.2006 Wollongong Marj Babb (NSW) | 4 | 261 | 328 |
| 20.05.2007 Ulladulla 2007 (NSW) | 6 | 251 | 358 |
| Head-to-head after 16 games | 6 | 10 | |
| Average score | 289.18 | 333.68 | |
| Spread: | -712 | 712 | |