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