Buitendag narrowly outpointed Coco Ho ( HAW ) in their Round 4 duel earlier in the day .
Buitendag narrowly faces a semi-final clash with close friend Johanne Defay ( FRA ) when competition resumes .
Buitendag narrowly outpointed Coco Ho ( HAW ) in their Round 4 duel earlier in the day and faces a semi-final clash with close friend Johanne Defay ( FRA ) when competition resumes .