Skill, Devastation, Historical Signifigance, Fame, Adversity, Quality of opponent, a clean ko without multiple knockdowns. These are most of the things i've based this list...
Top 10 K1 knock outs Grandprix 2007, Mighty Mo, Nortje, Jimmy Eimers,Hansuk Wor Petchpun, Musashi, Randy Kim, Ray Sefo, Semmy Schilt, Fujimoto,Badr Hari, Fujimoto, Karaev,...