With much of the credit going to Marchand. The winger was a force in the third, picking up three of his five points to get the Bruins back on the rails. Marchand started the comeback with some stellar hand-eye to keep the puck in the Penguins zone, before finding Krug, who unleashed a wicked slapper from a sharp angle in the corner to tie the game, 4-4, at 8:14 of the third.
"We're trying to obviously tie the game and it's one of our best players who competes on the puck like crazy," said Krug, who has nine points (goal, eight assists) in his last nine games. "He definitely makes his fair share of turnovers, but in a play like that it's important to give him trust and it ends up right in my wheelhouse.
"So, great on Marchy. He showed it all night that he was willing to compete and battle and I think at times he single handedly brought us back in the game."
Marchand completed the comeback with 1:57 to play when he surged down the wing and fired a wrister on goal. The puck clanked off the back of Pittsburgh goalie Tristan Jarry - who had replaced Matt Murray in the second - and trickled over the goal line to put the Bruins ahead, 5-4.
"I knew it hit the post and everyone started cheering so I thought it was in," said Marchand, who also assisted on Patrice Bergeron's empty-netter with 14 seconds remaining. "But then when I started going around the net, I realized it was still kind of bouncing around there. But that's one of those lucky plays where it bounces your way."
The puck has been bouncing Marchand's way plenty of late. The 31-year-old's five-point performance was his second in the last four games and extended his career-high point streak to 13 games (10-18-28). Marchand also extended his career-best assist streak to 12 games with three more helpers, giving him the longest such stretch since Marc Savard had a 12-game streak in 2007.
"[Point streaks are] nice, but you don't dwell on them," Marchand, who played a team-high 24:21, said of his five-point night. "You're going to have good nights, you're going to have bad nights and you just try to stay even keel all that time. At this point now, it doesn't matter in this room who has a good night.
"As long as we win, we're all happy and you're going to see every guy come into this room just as happy as the next. They're fun to be a part of, but you don't expect them to come often but they're definitely nice when they do."