| Tournament | Round | Trevor Halsall | Graeme Lock Lee |
| 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 17 games | 12 | 5 | |
| Average score | 437.29 | 350.47 | |
| Spread: | 1476 | -1476 | |