| Tournament | Round | Bettina Tonkin | Beryl Bell |
| 15.02.1998 Fremantle (WA) | 2 | 367 | 301 |
| 12.01.2003 Open (WA) | 1 | 290 | 298 |
| 12.12.2010 WA December Open (WA) | 4 | 325 | 336 |
| 16.09.2012 BASSENDEAN (WA) | 3 | 358 | 324 |
| 18.11.2012 MARATHON (WA) | 7 | 391 | 329 |
| 27.04.2014 April OPEN (WA) | 5 | 372 | 314 |
| 13.03.2016 1303OPEN (WA) | 2 | 348 | 270 |
| 24.06.2018 Bassendean (WA) | 5 | 440 | 216 |
| 15.07.2018 Bisection & AGM (WA) | 1 | 479 | 252 |
| 28.10.2018 Yoof Fundraiser (WA) | 5 | 389 | 228 |
| 18.11.2018 NOV OPEN (WA) | 3 | 360 | 282 |
| 17.02.2019 Feb Open (WA) | 2 | 322 | 286 |
| Head-to-head after 12 games | 10 | 2 | |
| Average score | 370.08 | 286.33 | |
| Spread: | 1005 | -1005 | |