Tim Stutzle had a goal and an assist, Artem Zub added two assists and the Ottawa Senators defeated the league-leading Colorado Avalanche 5-2 on Wednesday night.
Nick Cousins, Ridly Greig, Claude Giroux and Brady Tkachuk also scored for Ottawa and James Reimer made 16 saves.
Parker Kelly and Valeri Nichushkin scored for the Avalanche, who have now lost three of their last four. Mackenzie Blackwood stopped 18 shots.