Moore cut the lead to 2-1 at 17:29 of the third period. His quick one-timer from a sharp angle just outside the crease looked to be stopped by the glove of a sprawling Wolf, but video review confirmed the puck crossed the line.
"I knew it was close," Wolf said. "When I dove over, I thought maybe my glove was close to the line. From the view on the jumbo it looked really tight, so I thought we might get away with it, but the guy said the camera in the back of the net showed it by just a hair."
Rooney scored an empty-net goal with 20 seconds remaining for the 3-1 final.
"Especially when it's a 2-1 game at the very end, it is very frustrating because we usually never make those mistakes," Kings defenseman Jordan Spence said. "Sometimes it's just like that and we've just got to learn from our mistakes and move on and get ready for our next game."
NOTES: Wolf got an assist on Huberdeau's goal for his first NHL point; he is the 27th goaltender in franchise history to get an assist. ... Calgary forward Matt Coronato has five points (three goals, two assists) during a four-game point streak. ... Flames defenseman Rasmus Andersson had a game- and career-high seven blocked shots. He leads the NHL with 57. ... With an assist on Moore's goal, Kopitar tied Norm Ullman for 44th in NHL history with 1,229 points (424 goals, 805 assists). ... Los Angeles leads the NHL with 28 third-period goals. ... Moore has seven points (two goals, five assists) during a six-game point streak. ... Kings forward Phillip Danault had a five-game point streak end (one goal, five assists).