| Tournament | Round | Zina Costanzo | Rene Chelton |
| 01.08.1999 Winter Masters (NSW) | 13 | 324 | 334 |
| 22.04.2000 Australian Championships (QLD) | 13 | 318 | 405 |
| 12.06.2000 Victorian Championships (VIC) | 15 | 368 | 349 |
| 09.06.2001 Victorian Championships (VIC) | 20 | 347 | 389 |
| 10.06.2002 Victorian Championships (VIC) | 4 | 370 | 352 |
| 21.04.2003 Australian Championships (SA) | 9 | 349 | 441 |
| 14.06.2004 Victorian Championships (VIC) | 22 | 297 | 438 |
| 13.06.2005 Victorian Championships (VIC) | 24 | 408 | 387 |
| 11.06.2007 Victorian Championships (VIC) | 5 | 427 | 414 |
| 11.06.2007 Victorian Championships (VIC) | 13 | 463 | 407 |
| Head-to-head after 10 games | 5 | 5 | |
| Average score | 367.1 | 391.6 | |
| Spread: | -245 | 245 | |