| Tournament | Round | Bettina Tonkin | Anne Trotter |
| 19.06.2004 Western Australian Championships (WA) | 2 | 268 | 349 |
| 11.07.2004 Bassendean (WA) | 6 | 420 | 295 |
| 09.01.2005 Summer Maximin (WA) | 1 | 388 | 347 |
| 08.01.2006 Summer Maximin (WA) | 6 | 333 | 329 |
| 12.03.2006 Bunbury (WA) | 1 | 433 | 333 |
| Head-to-head after 5 games | 4 | 1 | |
| Average score | 368.4 | 330.6 | |
| Spread: | 189 | -189 | |