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