LOS ANGELES — After Jonathan Quick put Los Angeles on the brink of its first NHL title with yet another shutout, the Kings’ unbeatable goalie wore pretty much the same placid expression he sports after exhibition wins in September.

Almost nothing bothers Quick, including nearly all of the New Jersey Devils’ 72 shots in the Stanley Cup finals. Nothing affects his poise in the crease or his focus on the next victory — and that’s the only goal remaining for the Kings near the end of a playoff run with few equals in NHL history.

“We’re just trying to win one game here, that’s all we’re trying to do,” Quick said.

If they do, he’ll get to drink from the Stanley Cup.

Maybe that will put a smile on this goalie’s face.

Quick made 22 saves in his third shutout of the postseason, Anze Kopitar and Justin Williams each had a goal and an assist, and the eighth-seeded Kings beat New Jersey 4-0 Monday night to take a 3-0 series lead in front of a sold-out arena daring to believe in the end of a 45-year championship drought.

Alec Martinez scored the opening goal several minutes after Los Angeles killed a key 5-on-3 disadvantage. Jeff Carter and Williams added late power-play goals for the Kings, who improved to an astonishing 15-2 in the postseason.

Only the 1988 Edmonton Oilers can compare with their 16-2 run to the Cup. The Kings can match them with a win in Game 4 on Wednesday night.

“I don’t think we’re too surprised,” said Kings defenseman Drew Doughty, who has scored in every game of the finals. “We know we have a great team in here. Before this game, it easily could have been 2-0 for them. It is a tight series, but at the same time, we are really confident with the team we have in here.”

And with good reason: Los Angeles has jumped to a 3-0 lead in its fourth straight series — a feat never accomplished in NHL history before these seemingly charmed Kings steamrolled every opponent in their path.

Yet there’s not much excitement yet among the Kings, who realize the folly of celebrating anything that isn’t the Cup. Captain Dustin Brown didn’t pick up the Campbell Bowl after winning Los Angeles’ second conference title, and nobody was touching any speculation about the Cup.

“We’re obviously not going to be stone-faced if we do something we’ve been waiting our whole lives for,” Williams said. “We’re going to keep pushing forward. We’re a focused group right now. We’re not going to let anything get in our way. We certainly don’t want to get back on that plane.”