A spinning back fist out of nowhere leads to a brutal K.O.

Russian MMA fighter hits opponent with a vicious spinning backfist.

Near the conclusion of the second round at ProFC 62 in Rostov, Russia, Artur Alibulatov dropped opponent Boris Miroshnichenko with a vicious spinning backfist.

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The two fought for nearly 10 minutes before Abibulatov knocked Miroshichenko out. It'll take Miroshichenko a while to recover from that one.

Alibulatov didn't compete in 2016, but he improved his record to 18-2 with the knockout of Miroshnichenko.

(h/t Bleacher Report)