(Reuters) - Heavyweight Otto Wallin was just as shocked as the rest of the boxing world when Francis Ngannou floored Tyson Fury but the Swede says it's unlikely there will be a repeat against Anthony Joshua when the two meet in Saudi Arabia on Friday.

Former UFC heavyweight champion Ngannou lost to Fury in his first professional boxing match in Riyadh last October in what many expected would be an easy win for the giant British boxer.