PORTLAND — There was extra hockey on Friday at the Rose Garden.Thanks to the scoring touch of Edmonton’s Michael St. Croix and the play of goalie Laurent Brossoit, there will be more to this Western Hockey League championship series.St. Croix scored his third goal of the night 7:24 into overtime to give the Oil Kings a 3-2 win over the Portland Winterhawks, extending the best-of-7 series to a sixth game in Edmonton on Sunday.“Obviously, this one stings a bit. We’re not going to lie about that,” Winterhawks defenseman Seth Jones said. “We really wanted this one.”So did an Edmonton team playing for its survival. Despite a Portland goal 15 seconds into the game sending a thrill through the sold-out Rose Garden, despite not getting any power plays and being outshot 51-30, the Oil Kings found a way to win.Thanks to more than a little good luck.The first Edmonton goal deflected in off the skate of a Winterhawk. The second was a freebie after a mistake by Portland goalie Mac Carruth. And on the winner a St. Croix pass bounced off a defenseman’s skate right back to him in front. The Winterhawks’ Joey Baker celebrates his goal 15 seconds in to the first period Friday.