| Tournament | Round | Tony Sim | Cheah Siu Hean |
| 01.04.2002 Australian Championships (WA) | 10 | 415 | 429 |
| 11.04.2009 AUST CHAMPIONSHIP (WA) | 18 | 443 | 418 |
| 01.11.2015 WYSCA (WA) | 11 | 426 | 346 |
| 01.11.2015 WYSCA (WA) | 16 | 440 | 509 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 431 | 425.5 | |
| Spread: | 22 | -22 | |