| Tournament | Round | Ethel Collins | Judy Hay |
| 26.07.1998 Winter Masters (NSW) | 15 | 283 | 326 |
| 26.07.1998 Winter Masters (NSW) | 20 | 313 | 359 |
| 12.12.1998 North Shore (NSW) | 4 | 343 | 320 |
| 14.11.1999 Sydney (NSW) | 5 | 293 | 375 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 308 | 345 | |
| Spread: | -148 | 148 | |