Unfortunately for the home side though, the game would stay 1-1 for just 1:28. A slashing call to Teuvo Teravainen allowed Boston to go to the power play, one that would see Pastrnak strike again to put his team in front.
Then, 2:34 after Pastrnak's second of the night, Jakub Lauko pulled up and fired on the rush, moving Boston's lead to 3-1.
The Presidents' Trophy frontrunners took their two-goal advantage to the third, forcing Carolina to have to dig deep once again. But for the third time this week, they made it happen.
Scoring three in the third on Tuesday in New York to win, then doing the same on Saturday against Toronto, Rod Brind'Amour's club got back-to-back tallies from Brady Skjei and Sebastian Aho 2:07 apart to complete spin the momentum of the contest.
Igniting the PNC Arena crowd, Andersen would make 10 more saves in the third to get the affair to three-on-three play.
Tieing Calgary, Dallas, and Minnesota for the league-lead by going to overtime for the 21st time, each team had several chances, but Swayman and Andersen made a shootout necessary.
It was a short-lived skills competition for the home side though, as both Charlie Coyle and Jake DeBrusk found twine for Boston, and Brent Burns and Teuvo Teravainen were denied, ending the shootout after just two rounds.