| Tournament | Round | Colleen Birch | Chris May |
| 05.09.1999 Baulkham Hills Open (NSW) | 1 | 367 | 408 |
| 02.06.2018 Central Coast (NSW) | 7 | 339 | 446 |
| 01.10.2018 NSW Champs (NSW) | 2 | 360 | 406 |
| 23.02.2019 MatchPlay Qualifier (NSW) | 5 | 321 | 488 |
| 13.11.2021 2021 NSW Championship (NSW) | 6 | 296 | 530 |
| Head-to-head after 5 games | 0 | 5 | |
| Average score | 336.6 | 455.6 | |
| Spread: | -595 | 595 | |