LAS VEGAS, Sept 16, 2018 (News Wires) - Mexico's Saul "Canelo" Alvarez ended Gennady Golovkin's unbeaten reign as unified middleweight champion, battling to victory by majority decision in a pulsating rematch. Alvarez showed skill and durability to outlast Golovkin in another attritional contest between the two evenly-matched rivals at the T-Mobile Arena, one year after they had fought to a controversial draw at the same venue. Alvarez inflicted the first defeat of Kazakh slugger Golovkin's career after two judges scored it 115-113 in his favour, with another judge scoring it even at 114-114. "I am a great fighter, and I showed it tonight," Alvarez said. "If the people want another round, I'll do it again," added Alvarez, who improves to 50-1-2. "I feel satisfied because I gave a great fight. It was a clear victory." Golovkin, who fell to 38-1-1 after the loss, left the ring without speaking to television reporters. Alvarez's victory ended the 36-year-old's dream of securing a record-breaking 21st consecutive defense of his middleweight titles. While Golovkin was widely believed to have been unlucky not to win their first encounter last year, there was no controversy about Saturday's outcome. "We had a great fight, the one we expected the first time around," Golovkin's trainer Abel Sanchez said. "I had it close going into the 12th round. We had good judges who saw it from different angles – I can't complain about the decision, but it's close enough to warrant a third fight. "Canelo fought a great fight, congratulations."