| Tournament | Round | Kathryn Tiffen | Jan Chapman |
| 31.05.2008 Woy Woy (NSW) | 6 | 371 | 380 |
| 09.08.2008 Empire Bay (NSW) | 3 | 336 | 409 |
| 05.06.2010 WOYWOY 2010 (NSW) | 6 | 303 | 423 |
| 04.06.2011 Woy Woy (NSW) | 1 | 280 | 362 |
| 26.11.2017 Central Coast Champ (NSW) | 5 | 335 | 421 |
| 02.06.2018 Central Coast (NSW) | 5 | 441 | 239 |
| 28.10.2018 Empire Bay (NSW) | 1 | 384 | 391 |
| 25.11.2018 Central Coast Championship (NSW) | 1 | 448 | 320 |
| Head-to-head after 8 games | 2 | 6 | |
| Average score | 362.25 | 368.12 | |
| Spread: | -47 | 47 | |