| Tournament | Round | Dorothy Horton | Ivy Nicholls |
| 08.02.1998 North West (TAS) | 11 | 307 | 409 |
| 19.09.1998 Tasmanian Championships (TAS) | 8 | 381 | 355 |
| 14.03.1999 Ulverstone (TAS) | 13 | 370 | 317 |
| 27.01.2000 Ulverstone (TAS) | 8 | 319 | 324 |
| 27.01.2000 Ulverstone (TAS) | 12 | 315 | 379 |
| 28.07.2000 Launceston (TAS) | 3 | 325 | 378 |
| 29.10.2000 Hobart October (TAS) | 12 | 290 | 361 |
| 27.01.2001 Ulverstone (TAS) | 7 | 309 | 426 |
| 30.06.2001 Launceston (TAS) | 7 | 309 | 392 |
| 30.06.2001 Launceston (TAS) | 13 | 365 | 419 |
| 27.10.2001 Tasmanian Championships (TAS) | 12 | 383 | 469 |
| 02.02.2002 Ulverstone February (TAS) | 8 | 327 | 335 |
| 30.06.2002 Launceston (TAS) | 7 | 366 | 322 |
| 30.06.2002 Launceston (TAS) | 13 | 424 | 355 |
| 09.02.2003 Ulverstone (TAS) | 6 | 372 | 375 |
| 19.10.2003 Tasmanian Championships (TAS) | 8 | 369 | 279 |
| 25.01.2004 Ulverstone (TAS) | 7 | 429 | 290 |
| 14.03.2004 Launceston (TAS) | 13 | 330 | 359 |
| 30.10.2005 Tasmanian Championships (TAS) | 9 | 347 | 336 |
| 22.01.2006 Ulverstone (TAS) | 12 | 229 | 474 |
| 14.05.2006 Scamander (TAS) | 4 | 389 | 279 |
| 14.05.2006 Scamander (TAS) | 13 | 306 | 380 |
| 04.02.2007 Ulverstone (TAS) | 8 | 390 | 365 |
| Head-to-head after 23 games | 9 | 14 | |
| Average score | 345.69 | 364.26 | |
| Spread: | -427 | 427 | |