| Tournament | Round | Denis Mahon | Brian Irwin |
| 21.05.2000 Ulladulla (NSW) | 3 | 294 | 306 |
| 21.05.2000 Ulladulla (NSW) | 14 | 200 | 250 |
| 22.06.2002 Wollongong Marj Babb (NSW) | 7 | 344 | 351 |
| 22.02.2006 Ulladulla Summer Games Wednesday (NSW) | 5 | 353 | 318 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 297.75 | 306.25 | |
| Spread: | -34 | 34 | |