| Tournament | Round | Dianne Ward | Colleen McCormick |
| 12.07.1998 WA Masters (WA) | 7 | 390 | 443 |
| 17.01.1999 WA Open (WA) | 5 | 347 | 385 |
| 13.08.2000 Western Australian Masters (WA) | 10 | 398 | 362 |
| 02.09.2001 Western Australian Masters (WA) | 3 | 425 | 370 |
| 11.11.2001 Coogee (WA) | 6 | 369 | 341 |
| 26.05.2002 Melville (WA) | 5 | 553 | 266 |
| 10.08.2002 Western Australian Masters (WA) | 1 | 357 | 354 |
| 22.10.2006 Rockingham (WA) | 2 | 422 | 381 |
| 04.06.2007 Western Australian Championships A & B (WA) | 12 | 492 | 297 |
| 09.03.2008 Bunbury (WA) | 1 | 454 | 334 |
| 13.07.2008 Bassendean 2008 (WA) | 1 | 383 | 402 |
| 31.05.2009 WA CHAMPIONSHIP (WA) | 18 | 380 | 394 |
| 03.06.2013 WA Championship (WA) | 1 | 485 | 351 |
| 22.03.2015 MARCH OPEN (WA) | 6 | 346 | 410 |
| 17.03.2019 Joy Deans Memorial (WA) | 7 | 296 | 413 |
| Head-to-head after 15 games | 9 | 6 | |
| Average score | 406.46 | 366.86 | |