Twice Tampa Bay took the lead on goals from Brandon Hagel - his first as a Bolt - and Steven Stamkos, but David Pastrnak and the Bruins had an answer on each occasion.
Boston eventually took their first lead of the night just over four minutes to play in regulation when Pastrnak completed his hat trick to put the Bruins up for good.
Up next for the Bolts is a weekend back-to-back set that begins on Saturday afternoon against the Red Wings in Detroit.
Scoring Summary
1st Period
No Scoring
2nd Period
TBL 1, BOS 0
7:11 Brandon Hagel (22) - Ondrej Palat - SHG
Brandon Hagel's first goal as a Bolt came shorthanded and against the run of play. Boston had dominated play early in the second period and were on their fourth power play of the night when the Bolts broke out of their zone shorthanded. From the far wall, Ondrej Palat threaded a pass through to Hagel and the far post and he quickly wired home a one-timer to stake the Lightning to the lead.
TBL 1, BOS 1
9:55 David Pastrnak (34) - Erik Haula, Hampus Lindholm
A long feed from Erik Haula was perfectly banked off the wall and hit David Pastrnak in stride behind Ryan McDonagh on the rush. In alone on Andrei Vasilevskiy, Pastrnak swept a backhander home to tie the game at one less than three minutes after Hagel's goal.
3rd Period
TBL 2, BOS 1
3:51 Steven Stamkos (28) - Brayden Point, Nikita Kucherov
A shot from Jan Rutta pinballed around the Boston the crease. Brayden Point tried to control the puck but had it knocked backwards to Steven Stamkos trailing on the play. Stamkos jumped up and quickly wired his shot past Jeremy Swayman to put Tampa Bay back in front.
TBL 2, BOS 2
8:17 David Pastrnak (35) - Erik Haula, Connor Clifton
Pastrnak's second of the night tied the game at two. From behind the Lightning net, Erik Haula worked the puck to Pastrnak at the near post. Pastrnak spun away from Hedman and managed to slip the puck on his backhand through Vasilevskiy for the equalizer.
BOS 3, TBL 2
15:50 David Pastrnak (36) - Taylor Hall, Erik Haula
Tampa Bay was nearly able to clear the zone, but an outlet pass couldn't be controlled by Anthony Cirelli and Haula was able to barely hold the puck in at the blue line. Haula threw the puck toward the front of the net where it was deflected back to Pastrnak, who completed his hat trick with the game-winning goal.
