| Tournament | Round | John Barker | Julie Gardiner |
| 23.08.1998 Queensland Championships (QLD) | 10 | 437 | 370 |
| 21.08.1999 Queensland Championships (QLD) | 6 | 314 | 529 |
| 29.08.2009 Qld Champs Sat (QLD) | 4 | 405 | 341 |
| 29.08.2010 Qld Championships (QLD) | 5 | 381 | 432 |
| 29.08.2010 Qld Championships (QLD) | 9 | 367 | 356 |
| 01.04.2013 Australian Championship (QLD) | 7 | 413 | 457 |
| Head-to-head after 6 games | 3 | 3 | |
| Average score | 386.16 | 414.16 | |
| Spread: | -168 | 168 | |