| Tournament | Round | Bettina Tonkin | Joy Deans |
| 12.07.1998 WA Masters (WA) | 1 | 268 | 377 |
| 14.02.1999 Fremantle (WA) | 4 | 197 | 546 |
| 11.07.1999 Western Australian Masters (WA) | 10 | 403 | 298 |
| 19.09.1999 Spring Subiaco (WA) | 5 | 292 | 356 |
| 19.03.2000 Bunbury (WA) | 4 | 251 | 425 |
| 27.03.2000 Nedlands (WA) | 5 | 299 | 437 |
| 13.08.2000 Western Australian Masters (WA) | 8 | 433 | 328 |
| 08.04.2001 Nedlands (WA) | 3 | 354 | 375 |
| 02.09.2001 Western Australian Masters (WA) | 6 | 324 | 389 |
| 21.01.2007 January Maximin (WA) | 6 | 337 | 420 |
| 24.08.2008 Rockingham (WA) | 3 | 348 | 444 |
| 14.08.2011 OPEN AUGUST (WA) | 1 | 319 | 372 |
| 10.02.2013 Fremantle (WA) | 6 | 399 | 354 |
| 25.08.2013 Rockingham (WA) | 1 | 395 | 323 |
| 03.11.2013 COOGEE (WA) | 4 | 364 | 373 |
| 02.06.2014 WA Championship (WA) | 12 | 374 | 331 |
| 21.09.2014 Rockingham (WA) | 3 | 381 | 356 |
| 07.12.2014 Dec OPEN (WA) | 7 | 474 | 279 |
| 17.04.2016 YOOF0416 (WA) | 6 | 376 | 381 |
| 15.05.2016 Melville (WA) | 2 | 353 | 408 |
| 18.09.2016 Yoof September (WA) | 7 | 311 | 348 |
| Head-to-head after 21 games | 7 | 14 | |
| Average score | 345.33 | 377.14 | |
| Spread: | -668 | 668 | |