| Tournament | Round | Muriel Coulton | Keith Merritt |
| 12.07.1998 Coominya (QLD) | 5 | 330 | 261 |
| 13.09.1998 Toowoomba (QLD) | 3 | 296 | 309 |
| 21.03.1999 Redcliffe (QLD) | 6 | 321 | 319 |
| 23.05.1999 Brisbane Open (QLD) | 7 | 314 | 270 |
| 09.02.2003 Ipswich (QLD) | 3 | 331 | 336 |
| 13.02.2005 Ipswich (QLD) | 1 | 266 | 371 |
| 12.03.2005 Redland Bay (QLD) | 2 | 247 | 369 |
| Head-to-head after 7 games | 3 | 4 | |
| Average score | 300.71 | 319.28 | |
| Spread: | -130 | 130 | |