| Tournament | Round | Erica Williams | Sylvia Walker |
| 23.05.1999 Brisbane Open (QLD) | 1 | 360 | 368 |
| 21.08.1999 Queensland Championships (QLD) | 12 | 368 | 327 |
| 22.04.2000 Australian Championships (QLD) | 7 | 388 | 383 |
| 14.10.2000 Mindbenders Open (QLD) | 2 | 385 | 303 |
| 06.05.2001 Auran Open (QLD) | 6 | 377 | 359 |
| 13.01.2002 Greenbank (QLD) | 6 | 373 | 382 |
| 17.02.2002 Albert & Logan Marathon (QLD) | 1 | 393 | 385 |
| 17.02.2002 Albert & Logan Marathon (QLD) | 6 | 298 | 357 |
| 12.01.2003 Greenbank (QLD) | 4 | 388 | 378 |
| 15.03.2003 Redland Bay (QLD) | 1 | 238 | 482 |
| 13.07.2003 Coominya (QLD) | 4 | 441 | 244 |
| 28.11.2004 Southport (QLD) | 6 | 407 | 326 |
| 21.08.2005 Queensland Championships (QLD) | 1 | 442 | 320 |
| 17.04.2006 Australian Championships (QLD) | 12 | 408 | 317 |
| 10.07.2006 Albert & Logan (QLD) | 3 | 402 | 333 |
| Head-to-head after 15 games | 11 | 4 | |
| Average score | 377.86 | 350.93 | |
| Spread: | 404 | -404 | |