Holy smokes, Arthur Guseinov scored one hell of spinning back fist KO against Tyson Jeffries last night at M-1 Challenge XVII. I don’t know if will be crowned 2011’s Knockout of the Year — I’m more partial to Lyoto Machida’s Karate Kid crane kick KO at UFC 129 myself — but it will definitely be in the discussion. Either way, spinning back fists don’t get any prettier than that.

HT: IronForgesIron via MMA Mania