| Tournament | Round | Bettina Tonkin | Graham Bell |
| 17.01.1999 WA Open (WA) | 8 | 325 | 439 |
| 13.01.2002 WA Open (WA) | 1 | 307 | 484 |
| 30.08.2009 Winter Open (WA) | 1 | 331 | 385 |
| 05.03.2012 BINDOON 2012 (WA) | 8 | 329 | 378 |
| 05.03.2012 BINDOON 2012 (WA) | 18 | 407 | 412 |
| Head-to-head after 5 games | 0 | 5 | |
| Average score | 339.8 | 419.6 | |
| Spread: | -399 | 399 | |