| Tournament | Round | Chris Ostrowski | Chris May |
| 22.07.2012 Winter Masters (NSW) | 1 | 369 | 391 |
| 21.04.2014 Australian Championship (NSW) | 2 | 379 | 361 |
| 20.05.2018 Ulladulla (NSW) | 9 | 349 | 516 |
| 21.07.2019 NSW WINTER MASTERS (NSW) | 8 | 333 | 482 |
| 07.10.2019 NSW CHAMPIONSHIP (NSW) | 2 | 472 | 521 |
| Head-to-head after 5 games | 1 | 4 | |
| Average score | 380.4 | 454.2 | |
| Spread: | -369 | 369 | |