| Date | Tournament | State | Round | Trevor Halsall | Derek McKenzie |
|---|---|---|---|---|---|
| 25/01/1998 | City of Sydney International Masters | NSW | 8 | 408 | 380 |
| 21/01/1999 | City of Sydney Masters | NSW | 5 | 415 | 246 |
| 04/10/1999 | New South Wales Championships | NSW | 12 | 276 | 504 |
| 22/04/2000 | Australian Championships | QLD | 13 | 373 | 389 |
| 16/04/2001 | Australian Championships | VIC | 16 | 478 | 414 |
| 27/01/2002 | City of Sydney International Masters | NSW | 18 | 420 | 405 |
| 24/03/2008 | Australian Championship | VIC | 13 | 395 | 419 |
| 04/05/2008 | Queensland Championships | QLD | 15 | 373 | 433 |
| 08/04/2023 | AUS CHAMPS | VIC | 23 | 455 | 312 |
| Head-to-head after 9 games | 5 | 4 | |||
| Average score | 399.22 | 389.11 | |||
| Spread | 91 | -91 | |||