| Tournament | Round | Cheah Siu Hean | Alastair Richards |
| 28.11.2006 Warm-up Alpha (NSW) | 8 | 419 | 326 |
| 24.03.2008 Australian Championship (VIC) | 7 | 404 | 411 |
| 24.03.2008 Australian Championship (VIC) | 23 | 322 | 538 |
| 05.04.2010 Aus Championship (SA) | 5 | 410 | 447 |
| 05.04.2010 Aus Championship (SA) | 16 | 301 | 480 |
| 09.04.2012 Australian Championship (TAS) | 3 | 466 | 343 |
| 09.04.2012 Australian Championship (TAS) | 16 | 463 | 441 |
| 01.04.2013 Australian Championship (QLD) | 20 | 384 | 475 |
| 06.04.2015 Australian Championship (VIC) | 5 | 472 | 428 |
| 06.04.2015 Australian Championship (VIC) | 14 | 442 | 480 |
| Head-to-head after 10 games | 4 | 6 | |
| Average score | 408.3 | 436.9 | |
| Spread: | -286 | 286 | |