| Tournament | Round | Ruby Kotwall | Jean McGiffen |
| 15.08.1998 Revesby (NSW) | 3 | 376 | 438 |
| 14.11.1998 Sydney (NSW) | 1 | 300 | 514 |
| 11.09.1999 St George (NSW) | 4 | 333 | 447 |
| 04.10.1999 New South Wales Championships (NSW) | 4 | 357 | 418 |
| Head-to-head after 4 games | 0 | 4 | |
| Average score | 341.5 | 454.25 | |
| Spread: | -451 | 451 | |