| Tournament | Round | Gillian Renwick | Sal Costanzo |
| 18.05.2003 Dandenong (VIC) | 3 | 339 | 458 |
| 20.02.2005 Nunawading Matchplay Qualifier (VIC) | 1 | 369 | 454 |
| 04.02.2006 Notturno 7 (VIC) | 2 | 301 | 445 |
| 11.06.2007 Victorian Championships (VIC) | 16 | 349 | 413 |
| 24.06.2007 WSC Fundraiser (VIC) | 2 | 412 | 376 |
| 07.06.2008 VIC CHAMPS (VIC) | 21 | 297 | 435 |
| 10.01.2009 MARATHON 09 (VIC) | 14 | 406 | 388 |
| 08.06.2009 Vic Championship (VIC) | 1 | 212 | 554 |
| Head-to-head after 8 games | 2 | 6 | |
| Average score | 335.62 | 440.37 | |
| Spread: | -838 | 838 | |