Tommy Novak had a goal and an assist, and Ryan McDonagh had two assists for the Predators (35-25-2), who scored three goals in the third period. Juuse Saros made 25 saves.
Nathan MacKinnon scored for the Avalanche (37-20-5), who had won two in a row. Alexandar Georgiev made 31 saves.
Glass gave Nashville a 1-0 lead at 15:18 of the first period on the rush on a pass from Colton Sissons. Glass beat Georgiev five-hole from the slot.
MacKinnon tied it 1-1 at 17:01 with a wrist shot on a 2-on-1 rush with Mikko Rantanen that beat Saros on the glove side.
Glass put the Predators ahead 2-1 at 14:26 of the second period on a one-timer from the slot on a pass from behind the net by Novak.
Ryan O’Reilly extended it to 3-1 at 9:46 of the third period on the power play. Roman Josi took the original shot from the point, and the puck bounced off the back board to O’Reilly.
Novak pushed it to 4-1 at 17:32 with a power-play goal on a backhand-to-forehand deke around Colorado defenseman Bowen Byram.
Glass scored empty-net goal for the 5-1 final at 19:08 of the third period to complete the hat trick.
