WILMINGTON — Part of the problem is the penalty kill. Part of the problem is a weakening defense, as players adjust to different partners. Part of the problem, too, is the goaltending.
While there are numerous reasons for the Bruins’ current slide — one that now has them in a tie atop the Atlantic Division — it is clear that Tuukka Rask hasn’t been at his best of late. It’s something that had him out early at practice Wednesday with goalie coach Bob Essensa, doing his best to correct his mistakes, but also not being too serious about it.