| Date | Tournament | State | Round | Duncan Smith | Richard Birch |
|---|---|---|---|---|---|
| 14/05/1994 | Bondi Hakoah | NSW | 6 | 387 | 407 |
| 08/07/1995 | Chatswood | NSW | 5 | 368 | 344 |
| 14/02/1998 | Wollongong WORDS Valentine | NSW | 6 | 338 | 359 |
| 13/02/1999 | Wollongong | NSW | 8 | 261 | 465 |
| 04/12/2004 | North Shore | NSW | 3 | 357 | 366 |
| 07/01/2017 | Janboree | NSW | 3 | 397 | 355 |
| 06/01/2018 | Janboree | NSW | 8 | 319 | 345 |
| 04/01/2020 | JanBoree | NSW | 4 | 470 | 283 |
| Head-to-head after 8 games | 3 | 5 | |||
| Average score | 362.12 | 365.50 | |||
| Spread | -27 | 27 | |||