| Date | Tournament | State | Round | Peter Griffiths | Chris Ostrowski |
|---|---|---|---|---|---|
| 31/03/2007 | Blacktown | NSW | 8 | 320 | 338 |
| 30/05/2010 | Revesby | NSW | 4 | 368 | 353 |
| 17/07/2010 | Winter Masters | NSW | 2 | 443 | 327 |
| 21/11/2010 | Central Coast Championships | NSW | 6 | 376 | 382 |
| 30/01/2011 | City of Sydney International Masters | NSW | 19 | 456 | 314 |
| 20/08/2011 | Oatlands War of the Words | NSW | 1 | 326 | 324 |
| 29/01/2012 | CITY OF SYDNEY MASTERS | NSW | 16 | 397 | 396 |
| 25/11/2012 | CENTRAL COAST C'SHIP 2 DAY | NSW | 2 | 337 | 424 |
| 09/02/2013 | WORDS SUMMER | NSW | 5 | 428 | 303 |
| 25/05/2013 | Revesby | NSW | 3 | 345 | 347 |
| 10/11/2013 | ACT CHAMPIONSHIPS | ACT | 8 | 388 | 348 |
| 08/02/2014 | WORDS FEB | NSW | 5 | 383 | 303 |
| 25/10/2014 | Room to Read Charity | NSW | 5 | 365 | 311 |
| 11/09/2016 | Revesby Tournament | NSW | 4 | 336 | 362 |
| 06/05/2023 | BURWOOD NO FRILLS | NSW | 7 | 312 | 397 |
| 20/07/2024 | WINTER MASTERS | NSW | 13 | 314 | 361 |
| 04/01/2025 | JanBoree | NSW | 9 | 404 | 377 |
| 10/01/2026 | JANBOREE | NSW | 1 | 317 | 366 |
| Head-to-head after 18 games | 10 | 8 | |||
| Average score | 367.50 | 351.83 | |||
| Spread | 282 | -282 | |||