| Tournament | Round | Chris Dyson | Bettina Tonkin |
| 28.06.2009 WA BISECTION 2009 (WA) | 5 | 336 | 389 |
| 30.08.2009 Winter Open (WA) | 2 | 310 | 450 |
| 12.12.2010 WA December Open (WA) | 3 | 315 | 389 |
| 16.09.2012 BASSENDEAN (WA) | 7 | 298 | 390 |
| 18.11.2012 MARATHON (WA) | 1 | 304 | 337 |
| 18.11.2012 MARATHON (WA) | 8 | 318 | 435 |
| 06.04.2014 April YOOF (WA) | 4 | 302 | 414 |
| 27.04.2014 April OPEN (WA) | 4 | 395 | 391 |
| 02.06.2014 WA Championship (WA) | 3 | 263 | 424 |
| 02.06.2014 WA Championship (WA) | 17 | 355 | 415 |
| 06.07.2014 JULY OPEN (WA) | 7 | 333 | 354 |
| 27.07.2014 BASSENDEAN (WA) | 6 | 294 | 417 |
| 22.03.2015 MARCH OPEN (WA) | 4 | 298 | 415 |
| 13.03.2016 1303OPEN (WA) | 6 | 386 | 327 |
| 17.04.2016 YOOF0416 (WA) | 7 | 342 | 373 |
| 21.08.2016 COOGEE (WA) | 6 | 344 | 364 |
| 18.09.2016 Yoof September (WA) | 4 | 309 | 335 |
| 15.05.2022 Melville 2022 (WA) | 2 | 354 | 309 |
| 26.06.2022 Bassendean (WA) | 4 | 355 | 372 |
| 22.01.2023 January Open (WA) | 4 | 324 | 423 |
| Head-to-head after 20 games | 3 | 17 | |
| Average score | 326.75 | 386.15 | |
| Spread: | -1188 | 1188 | |