A perceived advantage for the Blues heading into their Western Conference playoff series against Los Angeles was the additions of defensemen Jay Bouwmeester and Jordan Leopold.

So far, perception is reality.

The Blues led LA two games to none going into Game 3 Saturday, and while the two newcomers can’t be credited for all of the success, their arrivals coincide with back-to-back victories over the Kings after eight straight losses.

The Blues limited LA to two goals in the first two games after the Kings averaged 4.7 goals a game in three regular-season matchups this season.

“I think it just gives them a different look, Bouwmeester especially, the way he can move the puck and skate,” LA captain Dustin Brown said. “He can get it up to their forwards quicker. He’s obviously an elite player. It gives them another puck-moving defenseman, which I think helps their team.”

Bouwmeester is making his first appearance in the NHL playoffs. He was a plus-1 in the first two games, and alongside defensive partner Alex Pietrangelo, the pair has been able to help stymie LA’s top playmakers.

“We always knew he was a great skater, but the way he uses that to his advantage is amazing, whether I make a mistake and he covers me or he makes a mistake and he gets himself out of the problem,” Pietrangelo said. “He understands the game extremely well. He makes the game look easy the way he plays.”

Playoffs are about physicality, but a bigger benefit to the Blues has been the ability of Bouwmeester and Pietrangelo to transition the puck.

“Everything gets ramped up, the energy and the physical play,” Bouwmeester said. “But I think the way our games are pretty similar ... you don’t want to run out of position to make big hits. You have to stick with what gets you here. You know teams are coming for you — that doesn’t change — but I think our focus is to move the puck and get it to our forwards because that’s where we want to be playing.”

LA defenseman Robyn Regehr played two seasons with Bouwmeester in Calgary and has watched his impact with the Blues.

“They have a lot more depth on defense and that’s helping them with Jay and his partner,” Regehr said. “They play a lot of the game, almost half the game sometimes. You know that they’re a big part of the team. That pair is also a good skating pair and they’re always up in the play, getting involved. For us, I think we can do a better job of making it a little difficult on those guys.”

Brown, who had a power-play goal in Game 2, said Saturday that the Kings were re-focusing their approach.