SALT LAKE CITY (AP) — Matthew Schaefer scored on a slap shot 2:08 into overtime to become the youngest player to score an overtime goal in a regular-season NHL game and the New York Islanders beat the Utah Mammoth 3-2 on Friday night for their third straight extra-time victory. Jonathon Drouin and Emil Heineman also scored for the Islanders (10-6-2) in their fourth straight win, and Tony DeAngelo had two assists. David Rittich stopped 27 shots — including all 16 after the first period.