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