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