| Date | Tournament | State | Round | Trevor Halsall | Graeme Lock Lee |
|---|---|---|---|---|---|
| 12/01/1997 | Lasseters Inodoor Challenge (Masters Only) | NT | 19 | 388 | 341 |
| 12/01/1997 | Lasseters Inodoor Challenge (Masters Only) | NT | 23 | 380 | 326 |
| 24/01/1997 | City of Sydney International Masters | NSW | 17 | 247 | 362 |
| 05/04/1999 | Australian Championships | NSW | 10 | 490 | 302 |
| 12/06/2000 | Victorian Championships | VIC | 18 | 394 | 293 |
| 09/06/2001 | Victorian Championships | VIC | 3 | 365 | 403 |
| 09/06/2001 | Victorian Championships | VIC | 21 | 424 | 355 |
| 01/10/2001 | New South Wales Championships | NSW | 15 | 406 | 436 |
| 23/11/2003 | ACT Championships | ACT | 4 | 392 | 429 |
| 25/01/2004 | City of Sydney International Masters | NSW | 7 | 382 | 297 |
| 28/01/2007 | City of Sydney International Masters | NSW | 20 | 386 | 278 |
| 27/06/2009 | Winter ACT 2009 | ACT | 2 | 490 | 223 |
| 14/06/2010 | Victorian Championship | VIC | 8 | 342 | 408 |
| 29/01/2012 | CITY OF SYDNEY MASTERS | NSW | 7 | 479 | 335 |
| 01/04/2013 | Australian Championship | QLD | 1 | 482 | 394 |
| 01/04/2013 | Australian Championship | QLD | 15 | 515 | 444 |
| 28/01/2019 | City Of Sydney International Masters | NSW | 8 | 429 | 312 |
| 22/04/2019 | 2019 Australian Championship | TAS | 16 | 382 | 406 |
| 08/04/2023 | AUS CHAMPS | VIC | 13 | 552 | 278 |
| 02/09/2023 | AUSTRALIAN MASTERS | NSW | 14 | 524 | 365 |
| Head-to-head after 20 games | 14 | 6 | |||
| Average score | 422.45 | 349.35 | |||
| Spread | 1462 | -1462 | |||