The Kings looked like they were skating through mud in the second period Tuesday night at Staples Center. The St. Louis Blues built a three-goal lead before the Kings rallied with a goal from defenseman Slava Voynov in the closing minutes of the period. The Blues seemed bent on giving away their lead, taking a couple of needless penalties late in the period. But the Kings failed to click after Roman Polak was penalized for holding and then went to the penalty box for boarding Dwight King. Kings coach Darryl Sutter pulled starter Jonathan Bernier after the Blues’ David Perron scored to make it 3-1 only 1:14 into the period. It was only the second time this season Sutter pulled his startin goaltender. Bernier couldn’t be faulted for any of the three goals.