| Tournament | Round | Cynthia Cook | Gloria O |
| 18.07.1999 Nunawading (VIC) | 3 | 321 | 290 |
| 05.12.1999 McKinnon (VIC) | 1 | 358 | 299 |
| 03.12.2000 McKinnon (VIC) | 5 | 325 | 275 |
| 21.01.2007 AESTIVAL FESTIVAL 2007 (VIC) | 3 | 341 | 342 |
| 25.09.2011 Essendon (VIC) | 1 | 339 | 385 |
| Head-to-head after 5 games | 3 | 2 | |
| Average score | 336.8 | 318.2 | |
| Spread: | 93 | -93 | |