McLellan said allowing the Wild to respond so quickly was the biggest mistake the Kings made.
"If we could go back and take a goal out of the game, that's the one that I would pick," McLellan said. "The others, we made some mistakes, yes. Coverage mistakes, but those are gonna happen. To me, that was a little bit of game management [breakdown] in that situation, and we've been stressing that for a month and a bit already."
Rask put the Wild ahead 2-1 at 11:55 when Kirill Kaprizov found him in the slot for a wrist shot into the side netting.
Hartman made it 3-1 at 16:52, shooting over Quick off a backhand pass from Marcus Foligno.
The Wild had a goal overturned at 16:29 of the second period for goaltender interference following a challenge by McLellan. Video review determined that Brandon Duhaime pushed Quick's pad to send the puck into net.
Minnesota coach Dean Evason said Foligno helped keep the team upbeat when Duhaime's goal was disallowed, and it carried over from the bench to the ice with an immediate response.
"I think 'Moose' said something like, 'Well, no matter what, we're playing good right now so let's just keep going,'" Evason said. "It's sure nice when the players talk like that and the coaches don't have to."