| Tournament | Round | Judy Hay | Chris Ostrowski |
| 19.04.2008 Blacktown (NSW) | 4 | 308 | 369 |
| 04.10.2008 NSW CHAMPIONSHIPS 08 (NSW) | 21 | 431 | 371 |
| 14.02.2009 wordsfeb09 (NSW) | 6 | 418 | 329 |
| 18.08.2013 Baulkham Hills Open (NSW) | 1 | 309 | 430 |
| 07.10.2013 NSW Champs (NSW) | 1 | 255 | 445 |
| 24.08.2014 Hills Open (NSW) | 1 | 236 | 487 |
| 07.02.2015 Matchplay qualifier (NSW) | 1 | 316 | 386 |
| Head-to-head after 7 games | 2 | 5 | |
| Average score | 324.71 | 402.42 | |
| Spread: | -544 | 544 | |