| Tournament | Round | Cheah Siu Hean | Trevor Halsall |
| 01.04.2002 Australian Championships (WA) | 8 | 406 | 399 |
| 21.04.2003 Australian Championships (SA) | 14 | 480 | 476 |
| 12.04.2004 Australian Championships (ACT) | 12 | 545 | 351 |
| 28.03.2005 Australian Championships (TAS) | 10 | 481 | 450 |
| 28.11.2006 Warm-up Alpha (NSW) | 4 | 419 | 442 |
| 29.11.2006 Warm-up Beta (NSW) | 5 | 527 | 268 |
| 24.03.2008 Australian Championship (VIC) | 24 | 313 | 467 |
| 11.04.2009 AUST CHAMPIONSHIP (WA) | 19 | 520 | 370 |
| 25.04.2011 Aus Championship (ACT) | 3 | 394 | 438 |
| 25.04.2011 Aus Championship (ACT) | 23 | 379 | 403 |
| 17.04.2017 National Championship (WA) | 24 | 344 | 401 |
| 02.04.2018 2018 National Championship (ACT) | 8 | 471 | 381 |
| Head-to-head after 12 games | 7 | 5 | |
| Average score | 439.91 | 403.83 | |
| Spread: | 433 | -433 | |