| Tournament | Round | Shirley Winkler | Barbara Nakkan |
| 06.02.2005 Kempsey (NSW) | 4 | 334 | 262 |
| 05.02.2006 Kempsey Challenge (NSW) | 2 | 316 | 282 |
| 04.02.2007 Kempsey Challenge (NSW) | 7 | 321 | 270 |
| 03.02.2008 Kempsey Challenge & Cup (NSW) | 3 | 343 | 349 |
| 01.02.2009 Kempsey (NSW) | 10 | 353 | 316 |
| 26.07.2009 Ocean Shores (NSW) | 5 | 307 | 346 |
| 30.01.2010 Kempsey Cup & Challenge (NSW) | 6 | 295 | 389 |
| Head-to-head after 7 games | 4 | 3 | |
| Average score | 324.14 | 316.28 | |
| Spread: | 55 | -55 | |