Last season, Namestnikov only scored eight goals in 53 games, including five into an empty net.
"Last year was just strange all around," he said. "We were dealing with the pandemic, and it seemed like I hit a ton of posts all season. This year, I had a great summer and the puck is going in."
Dylan Larkin pushed the lead to 3-0 at 14:09. Skinner whiffed on an attempted clearing pass off the end boards, and as he went to regain control of the puck, Larkin lifted his stick and tapped the puck into the open net.
"I just fanned on it," Skinner said. "It was bad timing -- if I hadn't done that, we might still be playing -- but I've made worse plays in my career."
Puljujarvi pulled Edmonton to within 3-1 at 19:25 on a breakaway, and McDavid scored 38 seconds into the third period to cut it to 3-2.
With the goal, McDavid extended his season-opening point streak to 11 games (nine goals, 14 assists).