LAS VEGAS — Brandon Saad scored off a rebound from the left circle 18 seconds into the third period to put Vegas ahead for good and the Golden Knights extended their winning streak to three games with a 3-1 victory over the Vancouver Canucks on Saturday night. Vegas took sole possession of first place in the Pacific Division, moving two points ahead of the Edmonton Oilers. The Canucks’ three-game winning streak ended. It was Saad’s second goal in five games since joining the Golden Knights in a deal with St. Louis. Ivan Barbashev scored his first goal since Dec. 14, Tomas Hertl also had a goal, and Brett Howden had two assists. Adin Hill made 32 saves. Jake DeBrusk scored for Vancouver.