The San Jose Sharks blew a three-goal lead in the third period, then allowed a goal to Zach Hyman at the 1:06 mark of overtime in a stinging 4-3 loss to the Edmonton Oilers on Thursday at Rogers Place. Thursday’s loss also marked the second time in 21 games this season that the Sharks have lost a game when leading after two periods. “Our 6-on-5 was obviously not good enough, and that’s something we’ll look at,” Sharks coach Ryan Warsofsky said. “We get the puck and we get what we want, and we turn it over.”All three Sharks goals came in the first period, setting a team record in the process. Collin Graf and Adam Gaudette scored first period goals just 1:09 apart, and Michael Misa added his second career NHL goal at the 11:40 mark for a 3-0 Sharks lead.