| Date | Tournament | State | Round | Harry Malcolm | Zina Costanzo |
|---|---|---|---|---|---|
| 05/07/1998 | High Country | VIC | 10 | 360 | 369 |
| 05/07/1998 | High Country | VIC | 12 | 387 | 378 |
| 09/08/1998 | NSW/Victoria Border Challenge Wagga Wagga | NSW | 5 | 434 | 334 |
| 06/02/2000 | Ballarat | VIC | 5 | 442 | 334 |
| 22/07/2000 | Melbourne Open | VIC | 3 | 368 | 349 |
| 19/11/2000 | Geelong | VIC | 2 | 417 | 316 |
| 27/01/2001 | City of Sydney International Masters | NSW | 5 | 473 | 325 |
| 11/02/2001 | Ballarat | VIC | 1 | 350 | 400 |
| 28/10/2001 | Teams Event | VIC | 1 | 393 | 417 |
| 25/08/2002 | Eastern Suburbs | VIC | 3 | 273 | 407 |
| 29/09/2002 | Essendon | VIC | 1 | 424 | 385 |
| 11/09/2004 | Raymond Island | VIC | 6 | 464 | 376 |
| 26/09/2004 | Essendon | VIC | 5 | 261 | 391 |
| 10/10/2004 | Frankston | VIC | 1 | 398 | 369 |
| 14/11/2004 | Geelong | VIC | 1 | 313 | 408 |
| 11/12/2004 | White Rabbit | VIC | 1 | 420 | 331 |
| 11/12/2004 | White Rabbit | VIC | 5 | 348 | 375 |
| 29/12/2004 | Decathon | VIC | 1 | 381 | 291 |
| 13/06/2005 | Victorian Championships | VIC | 1 | 487 | 291 |
| 10/12/2006 | McKinnon 2006 | VIC | 5 | 488 | 323 |
| 11/06/2007 | Victorian Championships | VIC | 20 | 376 | 325 |
| 28/09/2008 | Essendon | VIC | 1 | 372 | 417 |
| 17/02/2019 | Summer Fun | VIC | 7 | 327 | 393 |
| Head-to-head after 23 games | 14 | 9 | |||
| Average score | 389.39 | 361.04 | |||
| Spread | 652 | -652 | |||