| Tournament | Round | Bettina Tonkin | Graham Bell |
| 17.01.1999 WA Open (WA) | 8 | 325 | 439 |
| 14.01.2001 WA Open (WA) | 1 | 249 | 484 |
| 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 6 games | 0 | 6 | |
| Average score | 324.66 | 430.33 | |
| Spread: | -634 | 634 | |