| Tournament | Round | Harry Van Dijk | Grace De Bonis |
| 18.10.1998 Rockingham (WA) | 6 | 267 | 285 |
| 13.03.2005 Bunbury (WA) | 4 | 298 | 336 |
| 12.03.2006 Bunbury (WA) | 3 | 310 | 308 |
| 01.10.2006 Manjimup (WA) | 1 | 282 | 373 |
| 29.09.2007 Pinjarra Maximin (WA) | 2 | 353 | 290 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 302 | 318.39 | |
| Spread: | -82 | 82 | |