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