| Tournament | Round | Zina Costanzo | Elizabeth Ho |
| 05.04.1999 Australian Championships (NSW) | 16 | 343 | 311 |
| 27.01.2001 City of Sydney International Masters (NSW) | 7 | 347 | 345 |
| 27.01.2002 City of Sydney International Masters (NSW) | 16 | 396 | 446 |
| Head-to-head after 3 games | 2 | 1 | |
| Average score | 362 | 367.33 | |
| Spread: | -16 | 16 | |