Sune has been practicing Thaiboxing for many years and is a good striker and has good knees. He possess a good overview and is always calm and controlled when in the ring. His long striking range makes it difficult for his opponents to get to him.

In Vikingfight II Sune defeated Ali Chahrour from Denmark in a B-class Thaiboxing match.

In Viking fight III Sune was fighting Ali Chahrour for the second time. Once again the fight was very even but this time the judges ruled in favor of Ali at the end of the match.