| Tournament | Round | Ros Gibbons | Ethel Collins |
| 12.07.1998 Chatswood (NSW) | 3 | 388 | 275 |
| 26.07.1998 Winter Masters (NSW) | 18 | 370 | 323 |
| 05.04.1999 Australian Championships (NSW) | 15 | 276 | 439 |
| 14.08.1999 Revesby (NSW) | 3 | 361 | 352 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 348.75 | 347.25 | |
| Spread: | 6 | -6 | |