| Tournament | Round | John Barker | Ruby Kotwall |
| 12.07.1998 Chatswood (NSW) | 2 | 449 | 297 |
| 05.04.1999 Australian Championships (NSW) | 15 | 449 | 269 |
| 08.05.1999 Hassall Grove (NSW) | 5 | 324 | 373 |
| 10.07.1999 Chatswood (NSW) | 1 | 307 | 441 |
| 04.10.1999 New South Wales Championships (NSW) | 12 | 363 | 312 |
| 11.09.2000 St George (NSW) | 5 | 503 | 312 |
| Head-to-head after 6 games | 4 | 2 | |
| Average score | 399.16 | 334 | |