| Tournament | Round | Karmel Patterson | Betty Irwin |
| 20.02.2007 Ulladulla Summer Games Tuesday (NSW) | 3 | 399 | 339 |
| 21.02.2007 Ulladulla Summer Games Wednesday (NSW) | 3 | 419 | 279 |
| 18.09.2010 Ulladulla 2010 (NSW) | 9 | 338 | 447 |
| 20.05.2012 Ulladulla (NSW) | 8 | 407 | 330 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 390.75 | 348.75 | |
| Spread: | 168 | -168 | |