The loss of right wing Pascal Dupuis (knee) has been a damaging blow to the Pens' penalty-killing unit. With Dupuis in the lineup, the Penguins killed 87.5 percent of their penalties, which was on pace to give Pittsburgh's its second-best penalty-killing season in franchise history. Without Dupuis, who sustained a season-ending injury Dec. 23, the Pens have killed just 82.5 percent of their penalties. The penalty-killing unit has deteriorated since the Olympics. "We were very good up until then," Craig Adams said. Adams said he believes the Pens' penchant for turning the puck over is the primary reason for the decline in penalty kill percentage. Defenseman Brooks Orpik's turnover led to Columbus center Mark Letestu's power-play goal in Game 1 of the first-round series Wednesday. "We aren't getting clears when we have the chance," Adams said. "There will always be times when it's a 50/50 situation and you get the puck out. But there have been times when we have clear control and we're still not getting it out. That's a problem."