KNOCKOUT! Watch Gennady Golovkin squash Marco Antonio Rubio with brutal left hook (Video)

Kazakh destroyer Gennady Golovkin scored his eighteenth-straight knockout by planishing well-traveled veteran Marco Antonio Rubio last night (Sat., Oct. 18, 2014) on HBO Boxing from inside the StubHub Center in Carson, California. After the fight, "GGG" called for a 2015 showdown against Miguel Cotto. For full results and play-by-play from "Golovkin vs. Rubio," which also featured Nicholas Walters' knockout over Nonito Donaire, click here.