Ratings
2007-06-10: 6e Iepen Fryske Kampioenskippen(Netherlands)
| PONNE Karin | lost to | WILLEMSEN Robert |
| HOEKSTRA Lise | won against | PONNE Karin |
| DE VRIES Silke | lost to | PONNE Karin |
| PONNE Karin | lost to | FOKKER Naomi |
| DE VRIES Rixt | won against | PONNE Karin |
| PONNE Karin | lost to | KORTENDIJK Bauke |
2005-06-12: 4e Iepen Fryske Kampioenskippen 2005(Netherlands)
| PONNE Karin | lost to | PRASEPTYO Linda |
| KUPERUS Holbe | won against | PONNE Karin |
| PONNE Karin | won against | VAN DIJK Tony |
| VERBRUGGE Marjolijn | won against | PONNE Karin |
| PONNE Karin | won against | DE RIJKE Dennis |
| PONNE Karin | won against | JASBERS Koos |
2004-06-12: 3e Iepen Fryske Othello Kampioenskippen(Netherlands)
| PONNE Karin | won against | HOOGENBOOM Pascal |
| VAN GIMST Ruud | won against | PONNE Karin |
| VERWEIJ Samantha | won against | PONNE Karin |
| PONNE Karin | lost to | ROERADE Sanne |
| PONNE Karin | lost to | BLOM Dirk-Jan |
| DAM Francois | won against | PONNE Karin |
2002-06-09: 1e Iepen Fryske Othello Kampioenskippen(Netherlands)
| PONNE Karin | lost to | STENEKER Annemieke |
| HAKBIJL Jan Wieger | won against | PONNE Karin |
| PONNE Karin | lost to | WIJNJA Marije |
| VELTHUIS Marc | lost to | PONNE Karin |
| HAKBIJL Gerard | lost to | PONNE Karin |
| PONNE Karin | lost to | WIJNJA Nikki |