| Tournament | Round | Graham Bell | Bettina Tonkin |
| 17.01.1999 WA Open (WA) | 8 | 439 | 325 |
| 14.01.2001 WA Open (WA) | 1 | 484 | 249 |
| 13.01.2002 WA Open (WA) | 1 | 484 | 307 |
| 30.08.2009 Winter Open (WA) | 1 | 385 | 331 |
| 05.03.2012 BINDOON 2012 (WA) | 8 | 378 | 329 |
| 05.03.2012 BINDOON 2012 (WA) | 18 | 412 | 407 |
| Head-to-head after 6 games | 6 | 0 | |
| Average score | 430.33 | 324.66 | |
| Spread: | 634 | -634 | |