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UFC Video: Watch Thiago Santos' brutal walk-off head kick KO over Steve Bosse

Watch one of the most brutal UFC knockouts in recent memory.

As part of the UFC Fight Night: Machida vs. Romero main card, Thiago Santos only needed less than 30 seconds to brutally knock out former hockey enforcer Steve Bosse. After setting it up with a body kick early, watch how Santos landed a highlight reel head kick knockout on the clip above.

Check below for the brief and full play-by-play of the bout from our live blog:

Round 1 - Santos scores with a left and an inside leg kick.