| Date | Tournament | State | Round | Trevor Halsall | Robin Duncan |
|---|---|---|---|---|---|
| 24/01/1993 | City of Sydney Masters | NSW | 3 | 257 | 407 |
| 23/10/1993 | Marathon Round Robin | NSW | 12 | 457 | 204 |
| 11/12/1993 | North Shore Round Robin | NSW | 7 | 362 | 436 |
| 30/01/1994 | City of Sydney Masters | NSW | 11 | 398 | 232 |
| 09/12/1995 | North Shore Christmas | NSW | 8 | 360 | 367 |
| 15/03/1998 | Sutherland | NSW | 2 | 421 | 438 |
| 12/12/1998 | North Shore | NSW | 3 | 349 | 343 |
| 13/02/1999 | Wollongong | NSW | 6 | 374 | 413 |
| Head-to-head after 8 games | 3 | 5 | |||
| Average score | 372.25 | 355.00 | |||
| Spread | 138 | -138 | |||