| Tournament | Round | Sal Costanzo | Cheryl Michler |
| 21.01.1999 City of Sydney Masters (NSW) | 1 | 459 | 299 |
| 14.06.1999 Victorian Championships (VIC) | 12 | 407 | 384 |
| 01.08.1999 Winter Masters (NSW) | 15 | 424 | 484 |
| 01.08.1999 Winter Masters (NSW) | 18 | 319 | 327 |
| 30.01.2000 City of Sydney International Masters (NSW) | 13 | 351 | 354 |
| 22.04.2000 Australian Championships (QLD) | 14 | 417 | 304 |
| 27.01.2002 City of Sydney International Masters (NSW) | 8 | 403 | 355 |
| Head-to-head after 7 games | 4 | 3 | |
| Average score | 397.14 | 358.14 | |
| Spread: | 273 | -273 | |