| Date | Tournament | State | Round | John Hamilton | Chris Ostrowski |
|---|---|---|---|---|---|
| 17/03/2007 | Wyong | NSW | 5 | 271 | 375 |
| 09/04/2007 | Australian Championships | NSW | 21 | 384 | 346 |
| 09/09/2007 | Hills Open | NSW | 2 | 431 | 378 |
| 02/11/2008 | Nowra Bomaderry 2008 | NSW | 13 | 400 | 400 |
| 02/11/2008 | Nowra Bomaderry 2008 | NSW | 14 | 401 | 354 |
| 17/07/2011 | Winter Masters | NSW | 13 | 445 | 386 |
| 04/11/2012 | Nowra | NSW | 8 | 440 | 404 |
| 16/02/2013 | Oatlands Free | NSW | 5 | 430 | 461 |
| 23/03/2013 | Bomaderry | NSW | 1 | 487 | 364 |
| 18/08/2013 | Baulkham Hills Open | NSW | 8 | 414 | 369 |
| 10/11/2013 | ACT CHAMPIONSHIPS | ACT | 4 | 438 | 350 |
| 20/07/2014 | Winter Masters | NSW | 10 | 459 | 311 |
| 12/03/2016 | BOMADERRY | NSW | 8 | 477 | 411 |
| 14/10/2017 | Spring Marathon | NSW | 4 | 420 | 412 |
| 12/08/2018 | WYSC Fundraiser | NSW | 7 | 374 | 349 |
| 01/12/2018 | Sutherland Shire | NSW | 6 | 421 | 353 |
| 16/04/2022 | Australian Championship | QLD | 3 | 383 | 379 |
| 07/08/2022 | Revesby | NSW | 1 | 454 | 294 |
| Head-to-head after 18 games | 15.5 | 2.5 | |||
| Average score | 418.28 | 372.00 | |||
| Spread | 833 | -833 | |||