| Tournament | Round | Sylvia Watkins | Joan Riley |
| 13.06.1999 Round Robin (TAS) | 7 | 315 | 352 |
| 31.10.1999 Tasmanian Championships (TAS) | 11 | 294 | 373 |
| 21.05.2000 May (TAS) | 8 | 366 | 394 |
| 21.05.2000 May (TAS) | 13 | 396 | 295 |
| 21.05.2000 May (TAS) | 14 | 331 | 449 |
| 29.10.2000 Hobart October (TAS) | 5 | 285 | 400 |
| 31.03.2001 Tasmania March (TAS) | 4 | 383 | 303 |
| 27.10.2001 Tasmanian Championships (TAS) | 13 | 340 | 317 |
| 02.02.2002 Ulverstone February (TAS) | 4 | 382 | 365 |
| 27.10.2002 Tasmnaian Championships (TAS) | 3 | 312 | 395 |
| 09.02.2003 Ulverstone (TAS) | 12 | 332 | 338 |
| 19.10.2003 Tasmanian Championships (TAS) | 9 | 351 | 310 |
| 25.01.2004 Ulverstone (TAS) | 7 | 314 | 364 |
| 16.05.2004 East Coast (TAS) | 2 | 401 | 347 |
| 19.06.2004 Bellerive (TAS) | 4 | 359 | 344 |
| 23.01.2005 Ulverstone (TAS) | 6 | 336 | 449 |
| 30.10.2005 Tasmanian Championships (TAS) | 6 | 419 | 254 |
| 04.03.2007 Kingston (TAS) | 2 | 382 | 442 |
| Head-to-head after 18 games | 8 | 10 | |
| Average score | 349.88 | 360.61 | |
| Spread: | -193 | 193 | |