| Tournament | Round | Robin Andersen | Bettina Tonkin |
| 12.07.1998 WA Masters (WA) | 10 | 431 | 325 |
| 14.02.1999 Fremantle (WA) | 1 | 424 | 373 |
| 04.02.2001 Fremantle (WA) | 2 | 468 | 332 |
| 10.08.2002 Western Australian Masters (WA) | 1 | 551 | 340 |
| 31.05.2003 Western Australian Championships (WA) | 5 | 489 | 355 |
| 14.09.2003 Maximin (WA) | 7 | 465 | 329 |
| 08.02.2004 Fremantle (WA) | 3 | 327 | 438 |
| 19.06.2004 Western Australian Championships (WA) | 9 | 351 | 344 |
| 19.06.2004 Western Australian Championships (WA) | 18 | 338 | 289 |
| 11.12.2011 DEC OPEN (WA) | 1 | 454 | 314 |
| 05.03.2012 BINDOON 2012 (WA) | 13 | 452 | 343 |
| 07.12.2014 Dec OPEN (WA) | 3 | 398 | 299 |
| 05.07.2015 AGM Bisection (WA) | 4 | 372 | 350 |
| Head-to-head after 13 games | 12 | 1 | |
| Average score | 424.61 | 340.84 | |
| Spread: | 1089 | -1089 | |