| Tournament | Round | Chris Ostrowski | Alastair Richards |
| 27.02.2010 Matchplay Qualifier (NSW) | 7 | 369 | 423 |
| 21.11.2010 Central Coast Championships (NSW) | 4 | 364 | 482 |
| 27.02.2011 Matchplay Qualifier (NSW) | 4 | 433 | 472 |
| 01.10.2012 NSW Championships (NSW) | 1 | 224 | 439 |
| 21.04.2014 Australian Championship (NSW) | 3 | 334 | 380 |
| 26.07.2015 Winter Masters (NSW) | 3 | 335 | 523 |
| 31.01.2016 CSIM 2016 (NSW) | 1 | 401 | 442 |
| 29.01.2017 City of Sydney International Masters (NSW) | 7 | 325 | 514 |
| Head-to-head after 8 games | 0 | 8 | |
| Average score | 348.12 | 459.37 | |