| Tournament | Round | Ruby Kotwall | John Barker |
| 12.07.1998 Chatswood (NSW) | 2 | 297 | 449 |
| 05.04.1999 Australian Championships (NSW) | 15 | 269 | 449 |
| 08.05.1999 Hassall Grove (NSW) | 5 | 373 | 324 |
| 10.07.1999 Chatswood (NSW) | 1 | 441 | 307 |
| 04.10.1999 New South Wales Championships (NSW) | 12 | 312 | 363 |
| 11.09.2000 St George (NSW) | 5 | 312 | 503 |
| Head-to-head after 6 games | 2 | 4 | |
| Average score | 334 | 399.16 | |
| Spread: | -391 | 391 | |