VANCOUVER, British Columbia (AP) — The Vancouver Canucks have signed goaltender Thatcher Demko to a five-year contract extension. Canucks owner Francesco Aquilini confirmed the deal on Twitter. No financial terms have been released. Demko took over as the No. 1 goaltender for the Canucks after Jacob Markstrom went to the Calgary Flames in free agency. The 25-year-old Demko is 12-12-1 with a 2.77 goals-against average and .917 save percentage this season.