| Tournament | Round | Joan Watson | Derek McKenzie |
| 11.10.1998 Greenbank (QLD) | 5 | 362 | 409 |
| 21.02.1999 Ipswich (QLD) | 4 | 281 | 444 |
| 21.08.1999 Queensland Championships (QLD) | 7 | 329 | 377 |
| 20.02.2000 Ipswich (QLD) | 6 | 462 | 390 |
| 20.08.2000 Queensland Championships (QLD) | 12 | 367 | 389 |
| 25.08.2002 Queensland Championships (QLD) | 7 | 414 | 360 |
| 25.08.2002 Queensland Championships (QLD) | 17 | 324 | 369 |
| 23.02.2008 Early Warm-Up (QLD) | 4 | 276 | 490 |
| 04.05.2008 Queensland Championships (QLD) | 5 | 378 | 394 |
| Head-to-head after 9 games | 2 | 7 | |
| Average score | 354.77 | 402.44 | |
| Spread: | -429 | 429 | |