| Tournament | Round | Chris Ostrowski | Hari Nanayakkara |
| 09.09.2007 Hills Open (NSW) | 7 | 463 | 327 |
| 02.01.2010 Janboree (NSW) | 4 | 376 | 295 |
| 05.06.2010 WOYWOY 2010 (NSW) | 7 | 377 | 352 |
| 26.01.2019 AUSTRALIA DAY OPEN (NSW) | 5 | 440 | 270 |
| Head-to-head after 4 games | 4 | 0 | |
| Average score | 414 | 311 | |
| Spread: | 412 | -412 | |