David Benavidez completely steamrolled Gilberto Ramirez to reach a new career milestone.Benavidez was looking to become a three-weight world champion and complete a remarkable feat on ‘Cinco De Mayo’ weekend.View Tweet: https://twitter.com/hashtag/BenavidezZurdo?src=hash&ref_src=twsrc%5EtfwAs for Ramirez, he wanted to halt the hype train for the frightening talent and become the first to beat the ‘Mexican Monster’.The pair clashed at the T-Mobile Arena in Las Vegas in front of an excitable crowd, years on from previous sparring sessions.A star-studded cast of boxing elite was in the house including Mike Tyson, Ryan Garcia, and Benavidez’s bitter rival Canelo Alvarez. And they witnessed a punch-perfect demolition from the new arrival to cruiserweight.He first dropped Ramirez in the fourth round and was inflicting some gruelling damage on the champion.And in the sixth round, more punishing artillery landed, and Ramirez dropped to a knee with his eye almost completely shut.It was badly swollen and the referee checked the injury before stopping the contest.Benavidez conquered a third weight class in 200lbs, and now holds world titles simultaneously with the 175lbs division.After the stoppage, he named Dmitry Bivol as the top of his next fight hit-list.But he also name dropped Canelo Alvarez, who was previously ringside to watch Jamie Munguia, as a potential option.Benavidez’s win over Zurdo – how it unfoldedBenavidez’s display put him on the map as one of the most feared fighters in the sportBenavidez was walked to the ring by Tyson, with victory to set him alongside some of the sport’s pound-for-pound current greats.‘Zurdo’ held the natural size advantage, but Benavidez carries some of the fastest hands in the sport and looked to establish his speed early on.The pace was being set by Benavidez in the opening quarter and he was outlanding his opponent by double through three rounds.In the best moment of the fight in the fourth stanza, it was the challenger who let his hands go and landed at will on Ramirez. He first rocked him with a big right hand, before knocking down the champion on the bell.It was a masterclass from Benavidez, with his opponent having lasting damage, but showing real heart to survive and trade punches.Boxing scheduleFor all the upcoming fights and results this year, check out talkSPORT.com’s boxing schedule.Ramirez took a knee in the sixth having real issues with his eye which was badly swollen.And the bout was stopped with the challenger turning champion in a completely dominant display.