Better put, Mosley did a job on Collazo. Whereas it was Collazo who seemed to confuse Ricky Hatton when he nearly beat Hatton last May, Saturday it was Mosley who was perplexing Collazo with his magnificent skills. Mosley even dropped Collazo with a chopping right hand near the end of the 11th round. Collazo absorbed the punch, tried to stay on his feet but fell to the canvas after backstepping several feet. “Collazo is a tough fighter, a warrior,” the ever-classy Mosley said. “I knew I was faster than him and I could hit him with a quick jab. It felt good to be a welterweight again. I felt very light on my feet.” Vivian Harris, a former WBA super lightweight champion, earned the right to fight for the WBC super lightweight belt by winning a unanimous decision over Juan Lazcano in the semi-main event. Harris won the title elimination fight by scores of 115-112, 115-112 and 114-113. Billy “The Kid” Dib, a prospect from Sydney, Australia, is now 15-0 after winning a unanimous decision over Carlos Contreras in a 10-round preliminary lightweight fight. Dib won by three scores of 100-90. Contreras, of El Paso, Texas, is 20-13-3. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! Utilizing a terrific combination of lightning speed, ring savvy and power, Mosley won the World Boxing Council interim welterweight belt with a unanimous decision over Luis Collazo before 5,761 Saturday at Mandalay Bay. Mosley won by scores of 119-108, 118-109 and 118-109. This newspaper scored Mosley the winner, 117-110. Collazo being a so-called slick southpaw, it figured that might prove problematic for Mosley, an orthodox fighter. But it was Mosley who was the slicker of the two. He spun away from trouble with deft moves, slipped inside for quick shots to the body without suffering much in the way of consequences, and he smashed Collazo repeatedly with a hard right cross to the head. Collazo (27-3) had a few good moments in the way of an occasional left cross. But he was simply out-classed by Mosley, who had already won world championships in the lightweight, welterweight and super welterweight divisions. “I hurt my left hand in the third round,” Collazo, 25, of Brooklyn said. “I hurt it in training camp. I wish I could have been more effective, but that was the best I could do.” Collazo didn’t exactly bestow a heap of praise on Mosley. “Shane came to fight,” Collazo said. “He did his job.” LAS VEGAS – “Sugar” Shane Mosley talked like he had found the secret to eternal youth during a conference call last week. He said he was so fast at the age of 35, that it was scary. Well, perhaps Mosley has taken a drink from the fountain of youth.