| Tournament | Round | Joan Ashton | Di Martin |
| 30.04.2006 April Tournament (SA) | 6 | 302 | 327 |
| 28.04.2007 SA April Tournament (SA) | 3 | 277 | 394 |
| 20.10.2007 SA October Tournament (SA) | 6 | 334 | 342 |
| 18.11.2007 Brighton November (SA) | 1 | 266 | 350 |
| 26.07.2008 SA July Tournament (SA) | 1 | 321 | 517 |
| 07.03.2010 SA Championship (SA) | 4 | 221 | 505 |
| 14.08.2010 August (SA) | 3 | 261 | 318 |
| Head-to-head after 7 games | 0 | 7 | |
| Average score | 283.14 | 393.28 | |
| Spread: | -771 | 771 | |