| Tournament | Round | Trevor Halsall | Steve Sunter |
| 21.01.1999 City of Sydney Masters (NSW) | 15 | 414 | 430 |
| 21.01.1999 City of Sydney Masters (NSW) | 17 | 310 | 433 |
| 23.01.2000 Aestival (VIC) | 1 | 324 | 386 |
| 12.06.2000 Victorian Championships (VIC) | 17 | 466 | 333 |
| 09.09.2000 Melbourne Club (VIC) | 3 | 436 | 441 |
| 21.01.2001 Aestival (VIC) | 6 | 269 | 482 |
| 27.01.2001 City of Sydney International Masters (NSW) | 17 | 402 | 457 |
| 25.03.2001 Langwarrin (VIC) | 4 | 432 | 362 |
| 20.01.2002 Aestival (VIC) | 5 | 453 | 473 |
| 01.04.2002 Australian Championships (WA) | 20 | 377 | 366 |
| 30.03.2003 Langwarrin (VIC) | 5 | 423 | 386 |
| 21.04.2003 Australian Championships (SA) | 13 | 343 | 304 |
| Head-to-head after 12 games | 5 | 7 | |
| Average score | 387.41 | 404.41 | |
| Spread: | -204 | 204 | |