By Justin Barrasso Live updates, analysis and scores from the trilogy at the T-Mobile Arena. Canelo Alvarez defends the undisputed super middleweight title tonight against Gennadiy Golovkin. Alvarez won their last bout in September of 2018, permanently shattering Golovkin’s undefeated record. That was a rematch of their first meeting, which took place a year prior to that, and ended in a draw. Now, four years later and 24 rounds into the competition among the eternal rivals, comes the long-awaited trilogy bout. Oddsmakers have Alvarez (57-2-2, 39 knockouts) as the overwhelming favorite. He is …