| Tournament | Round | Trish Windhurst | Betty Coleman |
| 11.01.1998 Baulkham Hills (NSW) | 7 | 299 | 384 |
| 14.08.1999 Revesby (NSW) | 3 | 420 | 343 |
| 04.10.1999 New South Wales Championships (NSW) | 3 | 360 | 390 |
| 23.10.1999 Spring Marathon (NSW) | 12 | 366 | 283 |
| 22.07.2001 Winter Masters (NSW) | 13 | 338 | 382 |
| 01.10.2001 New South Wales Championships (NSW) | 3 | 319 | 341 |
| 06.07.2002 Chatswood (NSW) | 5 | 417 | 338 |
| 24.03.2003 Blue Mountains (NSW) | 5 | 288 | 425 |
| 07.12.2003 North Shore (NSW) | 6 | 361 | 383 |
| Head-to-head after 9 games | 3 | 6 | |
| Average score | 352 | 363.22 | |
| Spread: | -101 | 101 | |