| Date | Tournament | State | Round | Alastair Richards | Chris Ostrowski |
|---|---|---|---|---|---|
| 27/02/2010 | Matchplay Qualifier | NSW | 7 | 423 | 369 |
| 21/11/2010 | Central Coast Championships | NSW | 4 | 482 | 364 |
| 27/02/2011 | Matchplay Qualifier | NSW | 4 | 472 | 433 |
| 01/10/2012 | NSW Championships | NSW | 1 | 439 | 224 |
| 21/04/2014 | Australian Championship | NSW | 3 | 380 | 334 |
| 26/07/2015 | Winter Masters | NSW | 3 | 523 | 335 |
| 31/01/2016 | CSIM 2016 | NSW | 1 | 442 | 401 |
| 29/01/2017 | City of Sydney International Masters | NSW | 7 | 514 | 325 |
| Head-to-head after 8 games | 8 | 0 | |||
| Average score | 459.38 | 348.12 | |||
| Spread | 890 | -890 | |||