Gennady Golovkin vs. Marco Antonio Rubio

Tonight at 10:00 p.m. ET undefeated WBA and IBO middleweight champion Gennady "GGG" Golovkin (32-0-0, 27 KO) will step in the ring against Marco Antonio Rubio (59-6-1, 51 KO) on HBO, in a title fight that can be live streamed by clicking this link.