Montreal’s Alexei Emelin hit Tyler Seguin  with a check in the neutral zone late in the second period.
Bruins captain Zdeno Chara  was on the ice and saw Seguin go down in a heap, holding his left side. Later in the same shift, Chara blew up Emelin with a check, that resulted in a fight between the two.
Chara was tagged with two minutes for instigating, five for fighting and 10 minutes for misconduct. In other words, the cost of sticking up for Seguin, who returned to the bench just moments later, was 17 minutes of ice time.