Dylan Coghlan scored his first Stanley Cup playoff goal to get Vegas rolling, Carter Hart made 36 saves and the Golden Knights opened the Western Conference final by holding off the Colorado Avalanche 4-2 on Wednesday night. Trailing 3-0 in the third period, Colorado made it a 3-2 game with 2:21 remaining on a power-play goal from Gabriel Landeskog. Nic Dowd sealed the win for Vegas on an empty-net goal with 44.5 seconds left. Pavel Dorofeyev and Brett Howden also added goals for the Golden Knights, who took advantage of several defensive miscommunications by the Avalanche as they juggled their blue-line pairings with Cale Makar sidelined by an upper-body injury.