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