| Date | Tournament | State | Round | Zina Costanzo | Dawn Thomas |
|---|---|---|---|---|---|
| 31/03/1997 | Australian Scrabble Championship | SA | 18 | 272 | 424 |
| 21/02/1999 | Camberwell | VIC | 5 | 363 | 376 |
| 18/07/1999 | Nunawading | VIC | 6 | 322 | 435 |
| 21/01/2001 | Aestival | VIC | 4 | 370 | 349 |
| 23/07/2001 | Prahran | VIC | 6 | 368 | 387 |
| 20/01/2002 | Aestival | VIC | 4 | 361 | 417 |
| 18/01/2004 | Aestival | VIC | 3 | 367 | 418 |
| 15/02/2004 | Camberwell | VIC | 6 | 305 | 441 |
| Head-to-head after 8 games | 1 | 7 | |||
| Average score | 341.00 | 405.88 | |||
| Spread | -519 | 519 | |||