In addition to flipping Pastrnak and DeBrusk, the Bruins will also make some other changes up front with Trent Frederic sitting as a healthy scratch. As such, Tomas Nosek will slide up to the third-line left wing spot alongside Charlie Coyle and Craig Smith, while Curtis Lazar will shift over to center the fourth line. Chris Wagner, meanwhile, will enter the lineup as the fourth-line right wing.
"We moved some pieces around," said Cassidy. "Fred got himself in a bit of penalty trouble [in Game 2]. I'm not sure it's all warranted, but at the end of the day, that's where he's at right now. We've talked about how he can impact the game. We've got to get that message across.
"But it's less about Freddy and it's more about the two guys who've been in the league, which are his center and right winger. They've been around, so they need to drive the line no matter who's on their left side. We need a little more from them, and hopefully tonight we get it."
Wagner made his season debut with Boston a week ago tonight in Toronto after spending the season in Providence and registered 11 hits in 15:57 of ice time. Now, with the Bruins in need of a spark, the winger from Walpole will get his chance to make a similar impact at the bottom of the lineup.
"I liked Wags' game up in Toronto," said Cassidy. "We've seen him in the playoffs, sort of the grit he can bring in and being first on the forecheck, his physicality. I think it's really what has made a name for him in this league. So, if he can get there on time tonight on some of those, we could certainly use it."
Wagner will be suiting up for his 35th career postseason game with the Bruins and his 56th overall.
"Definitely [going to be] emotional," said Wagner. "I'm obviously very excited. I don't know if I really expected this to happen a couple weeks ago but I'm happy to be here and help the team win…down 2-0, you need something to kind of change the series around, hopefully I can do something to do that.
"I feel like we've been in these spots before where we were down so just try to help the team win."