He skated on Friday morning prior to Game 7 at TD Garden with his teammates, but according to coach Guy Boucher, he's doubtful for the game. Bergenheim skated prior to Game 6 as well but didn't play.
It's a big edge for the Bruins when the Lightning don't have Bergenheim in the lineup. He's given them some needed scoring on the third line (and he's defensively sound, too), but without him, the Bruins have the superior third unit. Chris Kelly, Tyler Seguin and Michael Ryder have more room to run free without Bergenheim's presence.
Couple that with the Bruins' fourth-line that has some punch and Boston definitely holds the even strength advantage with the forwards. But hey, Tampa made it work in Game 6. This is a Game 7, and you can't really analyze things too much. Anything can happen.