Takeaways: Bruins drop sloppy Game 2 to Panthers

Florida Panthers center Steven Lorentz scores a goal beating Boston Bruins goaltender Jeremy Swayman during second period action in game two. Photo by Matthew J Lee/Globe StaffSUNRISE, Fla. — For the first time this postseason, the Boston Bruins succumbed to game management lapses.

Jim Montgomery witnessed his team take a 1-0 lead in the first period after Charlie Coyle completed a tic-tac-goal that involved Brad Marchand and Pavel Zacha following Brandon Montour’s turnover along the walls.

Instead of building on that early lead, the second-year Boston bench boss watched his team self-inflict itself in the middle 20.

The Bruins struggled to clear pucks out of their defensive end throughout…