| Tournament | Round | Dave Bowen | Bettina Tonkin |
| 23.02.2003 Kwinana (WA) | 1 | 347 | 430 |
| 31.05.2003 Western Australian Championships (WA) | 10 | 247 | 431 |
| 13.07.2003 Bassendean (WA) | 4 | 304 | 326 |
| 28.09.2003 Manjimup (WA) | 5 | 303 | 364 |
| 08.02.2004 Fremantle (WA) | 4 | 293 | 401 |
| 14.03.2004 Bunbury (WA) | 4 | 387 | 361 |
| 06.06.2005 Western Australian Championships (WA) | 8 | 322 | 398 |
| 06.06.2005 Western Australian Championships (WA) | 13 | 352 | 360 |
| Head-to-head after 8 games | 1 | 7 | |
| Average score | 319.37 | 383.87 | |
| Spread: | -516 | 516 | |