| Date | Tournament | State | Round | Brian Irwin | Denis Mahon |
|---|---|---|---|---|---|
| 21/05/2000 | Ulladulla | NSW | 3 | 306 | 294 |
| 21/05/2000 | Ulladulla | NSW | 14 | 250 | 200 |
| 22/06/2002 | Wollongong Marj Babb | NSW | 7 | 351 | 344 |
| 22/02/2006 | Ulladulla Summer Games Wednesday | NSW | 5 | 318 | 353 |
| Head-to-head after 4 games | 3 | 1 | |||
| Average score | 306.25 | 297.75 | |||
| Spread | 34 | -34 | |||