In the video above, ESPN hockey analyst Barry Melrose says the injury to the Bruins' Patrice Bergeron (concussion) -- assuming he will be out for the start of the Eastern Conference finals against the Lightning -- shifts the advantage in the series from Boston to Tampa Bay.
"Patrice Bergeron takes all the draws, he's their best penalty killer," Melrose says. "It's almost akin to losing [Zdeno] Chara on defense, that's how valuable Bergeron is to the Boston Bruins. Last year they lose [David] Krejci against Philadelphia, you know what happened in that series.
"If [Bergeron] comes back quick in the series, maybe it can be overcome, but if he's going to be out for the entire series, I give the edge to the Tampa Bay Lightning in this series."
The Bruins have not officially ruled out Bergeron -- who suffered a mild concussion in the third period of Game 4 against the Flyers -- for any part of the series against the Lightning, but it appears unlikely he would play at least at the start of the series.