Acciari was a bull at both ends of the ice, landing a game-high five hits, while also firing four shots on goal - the second-highest total of his four-year career. The goal and assist, meanwhile, marked his first ever multi-point game.
"Especially in this group here, it takes a lot more than a puck to the mouth to keep a guy out of the game," said Brad Marchand, who picked up his 26th goal of the season. "You see what guys consistently play through here with broken bones and holes in their lungs and kidney stones and stuff like that…hockey players don't sit out because they have a sore thumb."
That toughness, grit, and energy is exactly why Boston's fourth line of Acciari, Sean Kuraly, and Chris Wagner is routinely called upon by Cassidy to start games - which was the case again on Thursday - and match up against the opposing team's top line.
"Coach has got a lot of confidence in us to get us out to a good start, and we just try to get the puck in deep and just kind of go to work like the line we are. We're strong on pucks and that's what we try to think of every night," said Acciari, who will require more dental work to finish patching up the damage to his chops once the swelling subsides.
After a number of high-end chances over the opening two periods, the trio finally broke through just past the midway point of the third period giving the Bruins a boost at just the right time.
With Kuraly having left the game earlier in the frame after taking a heavy hit behind the Tampa Bay net, Joakim Nordstrom slid down to take his spot and it was his heavy forecheck that helped set things in motion.
Nordstrom closed in on Lightning goalie Louis Domingue behind the net, forcing the backstop to rim the puck around the boards. Acciari, entering the zone fresh off a line change, pinched down the wall to knock the puck away from Nikita Kucherov and tap it over to Wagner, whose shot off of Domingue's pad ricocheted into the slot.
Acciari was there to bang home the rebound and give Boston a 2-0 advantage with 8:13 to play.
"I just picked the puck up off the wall, and gave it to Wags and Wags had a great shot low pad and it just happened to bounce right in front of me and I was able to tap it in," said Acciari, whose tally set off a span of three Bruins goals in 1:28 that extended their lead to 4-0.