| Tournament | Round | Joan Watson | Erica Williams |
| 17.05.1998 Southport Winter (QLD) | 2 | 353 | 363 |
| 07.06.1998 Millmerran (QLD) | 5 | 390 | 281 |
| 15.11.1998 Oyez (QLD) | 7 | 435 | 253 |
| 21.02.1999 Ipswich (QLD) | 6 | 395 | 347 |
| 12.09.1999 Toowoomba (QLD) | 3 | 423 | 340 |
| 09.01.2000 Coominya Summer (QLD) | 5 | 358 | 375 |
| 20.02.2000 Ipswich (QLD) | 2 | 429 | 313 |
| 09.07.2000 Coominya Winter (QLD) | 3 | 387 | 326 |
| 15.10.2000 Mindbenders Standard (QLD) | 3 | 403 | 333 |
| 14.01.2001 Greenbank (QLD) | 6 | 382 | 293 |
| 31.03.2001 Albert & Logan (QLD) | 1 | 277 | 417 |
| 20.05.2001 Harrisville (QLD) | 3 | 410 | 329 |
| 05.08.2001 Newmarket (QLD) | 6 | 387 | 343 |
| 26.08.2001 Queensland Championships (QLD) | 7 | 450 | 320 |
| 13.06.2004 Millmerran (QLD) | 3 | 394 | 350 |
| 27.08.2006 Queensland Championships (QLD) | 15 | 351 | 417 |
| 10.06.2007 Toowoomba (QLD) | 11 | 422 | 393 |
| 15.07.2007 Lockyer Valley (QLD) | 3 | 505 | 272 |
| 06.09.2008 Toowoomba (QLD) | 3 | 374 | 349 |
| Head-to-head after 19 games | 15 | 4 | |
| Average score | 396.05 | 337.57 | |
| Spread: | 1111 | -1111 | |