NHL Notebook: If Boston splits up top line, who’s going where?

If this 2018-19 Boston Bruins team was firing on all cylinders, Bruce Cassidy wouldn’t even have to deal with the conundrum of splitting up his top forward line — a trio that has posted a goal differential of plus-13 and a Corsi For Percentage of 58.85 at five-on-five play dating back to the start of last year.

But with Patrice Bergeron, Brad Marchand and David Pastrnak accounting for 22 of the Bruins' 37 goals to open the season, Boston’s coaching staff is weighing every option to solve the team's secondary scoring woes — a recurring trend that became a fatal flaw in last season’s playoff exit against a deep Lightning squad.

Slowly but surely, Cassidy has shuffled up his lines when necessary following a prolonged scoring drought — usually flipping Pastrnak down to David Krejci’s line and installing a revolving door on the right side of Bergeron.

Pastrnak has the speed and skill to do some damage on a line with Krejci, with the B’s holding a 21-12 edge in high-danger scoring chances last season whenever the duo was out on the ice last year during 5v5 — all in just over 80 minutes of TOI.

But who joins the top dogs in Bergeron and Marchand? Cassidy elaborated on a few of the options available for the Bruins on Friday.