| Tournament | Round | Meg Henderson | Zina Costanzo |
| 05.03.2000 Bendigo (VIC) | 1 | 395 | 432 |
| 12.06.2000 Victorian Championships (VIC) | 13 | 383 | 333 |
| 09.06.2001 Victorian Championships (VIC) | 19 | 365 | 357 |
| 10.06.2002 Victorian Championships (VIC) | 9 | 391 | 264 |
| 02.03.2003 Bendigo (VIC) | 6 | 445 | 305 |
| 21.04.2003 Australian Championships (SA) | 14 | 438 | 371 |
| 14.11.2004 Geelong (VIC) | 4 | 343 | 353 |
| 01.05.2005 Mayday (VIC) | 7 | 427 | 333 |
| 13.06.2005 Victorian Championships (VIC) | 5 | 426 | 255 |
| 27.11.2005 McKinnon (VIC) | 1 | 411 | 348 |
| 24.03.2006 March Notturno (VIC) | 4 | 328 | 404 |
| 20.10.2007 WSC Fundraiser 2 (VIC) | 2 | 349 | 467 |
| Head-to-head after 12 games | 8 | 4 | |
| Average score | 391.75 | 351.83 | |
| Spread: | 479 | -479 | |