| Date | Tournament | State | Round | Chris Ostrowski | Devorah Ullman |
|---|---|---|---|---|---|
| 21/08/2016 | Hills Open | NSW | 1 | 418 | 316 |
| 05/01/2021 | oitoo by lake 05012021 | NSW | 4 | 397 | 351 |
| 13/04/2021 | OITOO East Hills | NSW | 5 | 377 | 337 |
| 21/12/2021 | OITOO by river | NSW | 2 | 371 | 419 |
| 22/04/2023 | Wallerawang | NSW | 4 | 363 | 332 |
| 22/04/2023 | Wallerawang | NSW | 12 | 526 | 240 |
| 26/09/2023 | oitoo Spring | NSW | 3 | 281 | 419 |
| 29/03/2025 | LAKE MACQUARIE AUTUMN | NSW | 3 | 438 | 403 |
| Head-to-head after 8 games | 6 | 2 | |||
| Average score | 396.38 | 352.12 | |||
| Spread | 354 | -354 | |||