| Tournament | Round | Keith Merritt | Jean Mackenzie |
| 22.02.1998 Ipswich (QLD) | 1 | 322 | 312 |
| 09.07.2000 Coominya Winter (QLD) | 5 | 302 | 342 |
| 14.09.2003 Toowoomba (QLD) | 4 | 341 | 308 |
| 12.09.2004 Toowoomba (QLD) | 4 | 310 | 367 |
| 11.09.2005 Toowoomba (QLD) | 6 | 294 | 365 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 313.8 | 338.8 | |
| Spread: | -125 | 125 | |