| Tournament | Round | Betty Irwin | Beryl Pearson |
| 15.05.2003 Ulladulla (NSW) | 5 | 423 | 344 |
| 11.02.2006 Wollongong (NSW) | 4 | 320 | 372 |
| 02.11.2008 Nowra Bomaderry 2008 (NSW) | 6 | 370 | 368 |
| 02.11.2008 Nowra Bomaderry 2008 (NSW) | 13 | 332 | 333 |
| 15.03.2009 Bomaderry March 2009 (NSW) | 3 | 390 | 292 |
| 16.05.2009 Ulladulla (NSW) | 4 | 284 | 349 |
| 31.10.2009 Nowra 2009 (NSW) | 5 | 405 | 332 |
| 18.09.2010 Ulladulla 2010 (NSW) | 8 | 414 | 321 |
| 06.11.2010 Nowra (NSW) | 13 | 323 | 403 |
| 20.05.2012 Ulladulla (NSW) | 6 | 359 | 338 |
| 20.05.2012 Ulladulla (NSW) | 14 | 334 | 299 |
| Head-to-head after 11 games | 7 | 4 | |
| Average score | 359.45 | 341 | |
| Spread: | 203 | -203 | |