| Tournament | Round | Sal Costanzo | Patricia Mitchell |
| 08.06.1998 Victorian Championships (VIC) | 9 | 374 | 418 |
| 05.07.1998 High Country (VIC) | 9 | 331 | 407 |
| 05.07.1998 High Country (VIC) | 12 | 468 | 376 |
| 05.10.1998 New South Wales Championships (NSW) | 18 | 399 | 259 |
| 07.03.1999 Bendigo (VIC) | 6 | 363 | 393 |
| 21.03.1999 Prahran (VIC) | 3 | 405 | 348 |
| 14.06.1999 Victorian Championships (VIC) | 2 | 328 | 493 |
| 22.08.1999 Bentleigh (VIC) | 6 | 304 | 455 |
| 27.08.2000 Bentleigh (VIC) | 1 | 441 | 391 |
| 25.02.2001 Camberwell (VIC) | 6 | 404 | 366 |
| 04.03.2001 Bendigo (VIC) | 3 | 339 | 470 |
| 09.06.2001 Victorian Championships (VIC) | 15 | 380 | 436 |
| 25.05.2002 Bunny (VIC) | 3 | 413 | 352 |
| 22.02.2003 Ballarat (VIC) | 3 | 442 | 305 |
| 21.04.2003 Australian Championships (SA) | 18 | 441 | 424 |
| 18.05.2003 Dandenong (VIC) | 4 | 403 | 394 |
| 08.06.2003 Victorian Championships (VIC) | 2 | 373 | 352 |
| 27.11.2005 McKinnon (VIC) | 4 | 370 | 395 |
| 18.02.2007 Camberwell (VIC) | 3 | 302 | 500 |
| 01.03.2009 TEAM CHALLENGE (VIC) | 2 | 387 | 370 |
| Head-to-head after 20 games | 11 | 9 | |
| Average score | 383.35 | 395.2 | |
| Spread: | -237 | 237 | |