Bruins center David Krejci quieted a previously raucous crowd at Consol Energy Center last night with a two-goal performance in Game 1. After the Eastern Conference finals opener, defenseman Andrew Ference had an explanation for his teammate’s ability to light up the scoreboard every time the Stanley Cup playoffs roll around, even in the most hostile environments. “I think the one thing I think that really helps David is he’s very cool-headed and calm,” Ference said. “This time of year is obviously about having emotions and getting outside of your comfort zone. But some of the best players are also the ones that can keep their pulse down a little bit and not get out of their heads with trying to do too much and getting over their heads and only playing with emotion. You know he does a good job of keeping pretty cool and staying extremely sharp, but calm. He’s been a great playoff performer all the time.” With his two goals in the Bruins’ 3-0 win against the Pittsburgh Penguins, Krejci now has seven goals in 13 games this postseason. Krejci, who led all playoff scorers with 23 points in 25 games during the Bruins’ run to the 2011 Stanley Cup championship, now has 19 points in this playoff season to lead all scorers again. That list, of course, includes Pittsburgh’s more well known stars Evgeni Malkin (16 points) and Sidney Crosby (15 points). So now that Krejci has not only padded his lead on the Penguins’ two superstars, but done it with them on the same ice getting shut out, has Krejci ascended to higher ground among the elite of the NHL? “No,” he said. “Those guys are, I think they’re the best players in the world at this moment. And there’s no one like those guys. But on the other hand, we don’t have guys like that. We have a team and we all play as a team. So . . .” The team effort in Game 1 included 29 saves from goaltender Tuukka Rask and one goal and two assists from Krejci’s longtime linemate Nathan Horton. Krejci started the scoring 8:23 into the game with a slap shot from the high slot that trickled through the pads of Penguins goaltender Tomas Vokoun.