The most brutal ko I ve ever seen -live or on tv-was Lebedev's devasting ko of his American opponent Berry Butler.Damn! What a monstrous breath taking ko it was!:bbb
i like the one with the most historical significance, marciono stopping walcott - start of a new era :bbb
Of recent I'd say - Golovkin vs Ishida https://www.youtube.com/watch?v=_DG7OUZThzs Or Kirkland vs Canelo (kirkland coincidentally was knocked out himself by Ishida) https://www.youtube.com/watch?v=sAFjo2ykqWs Those were straight up brain restarting knockouts.