| Date | Tournament | State | Round | Betty Mitchell | Gillian Briggs |
|---|---|---|---|---|---|
| 23/03/2001 | South Australian Championships | SA | 7 | 329 | 427 |
| 28/12/2007 | SA Christmas Leftovers | SA | 5 | 309 | 469 |
| 14/11/2009 | Southern Tournament | SA | 3 | 374 | 396 |
| 07/02/2010 | SA February | SA | 4 | 427 | 290 |
| Head-to-head after 4 games | 1 | 3 | |||
| Average score | 359.75 | 395.50 | |||
| Spread | -143 | 143 | |||