| Tournament | Round | Col Coulton | Jean Mackenzie |
| 22.02.1998 Ipswich (QLD) | 2 | 366 | 319 |
| 23.08.1998 Queensland Championships (QLD) | 4 | 296 | 413 |
| 20.05.2001 Harrisville (QLD) | 3 | 296 | 364 |
| 16.09.2001 Toowoomba (QLD) | 5 | 308 | 410 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 316.5 | 376.5 | |
| Spread: | -240 | 240 | |