"[The referees] started calling penalties," Ducks forward Ryan Getzlaf said. "That's the momentum change of the game. Our [penalty] kill didn't get it done. And their power play did."
Anaheim outshot Montreal 9-0 before Byron Froese drove to the net for the Canadiens' first shot on goal, with Shaw scoring on the rebound at 6:10 for a 1-0 lead.
"We knew that they were going to come out and play a heavy game and I don't think we were as sharp early on," Petry said. "As the game went on, we got better."
Morrow made it 2-0 on a power play at 8:17, scoring on a one-timer from the right point. Schlemko increased the lead to 3-0 at 10:13 when he drove the slot for his first goal with the Canadiens, and his first since Jan. 21, 2017 with the San Jose Sharks (51 games).
Petry made it 4-0 with Montreal's second power-play goal at 3:45 of the second period when his slow shot slid under the paddle of Berra's stick.