DENVER (AP) – The Colorado Avalanche have held serve in the first two games of the NHL’s Western Conference finals. The Avalanche have a two-games-to-none lead after a flurry of goals and a backup netminder led to a 4-0 shutout of the Oilers. Nazem Kadri set up goals by Artturi Lehkonen, Josh Manson and Mikko Rantanen during a 2:04 span early in the second period. Lehkonen and Manson tallied just 15 seconds apart, and Nathan MacKinnon capped the scoring late in the third. Pavel Francouz had a 24-save shutout two nights after the Oilers scored six times in a Game 1 loss. Francouz replaced Darcy Kuemper, who sustained an upper-body injury in the second period of the opener. Mike Smith made 35 saves for the Oilers, who host Game 3 on Saturday.