Kastelic, who spent his three seasons with the Senators, picked up an assist and a fighting major in the Bruins' shootout loss. He missed two games after an ugly incident in Tampa.

The Boston Bruins announced on Friday that they have signed center Mark Kastelic to a three-year extension with an annual cap hit of $1.567 million. Kastelic has been a perfect fit on the fourth line.

When Mark Kastelic suits up every night, the Bruins know exactly what what they’re going to get from the rough-and-tumble forward. Now Kastelic knows what he’s going to get from the Bruins. The B’s announced on Friday that they inked the 25-year-old Kastelic to a three-year extension that carries an annual cap hit of $1.

The taste of a sixth straight loss won’t disappear from the mouths of the Boston Bruins quickly, and neither will the sight of one of their key role players wobbling on his skates disappear from their minds.