| Date | Tournament | State | 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 | 406.47 | 366.87 | |||
| Spread | 594 | -594 | |||