As has been the case throughout camp, there were two groups split into different on-ice sessions.
There were slight variations to the groups, however, with Zdeno Chara joining Patrice Bergeron during the same session. The captain and alternate captain had been split between the two groups up until this point.
With a slate of seven preseason games, beyond the scrimmage, beginning on Tuesday night in Montreal, the practices were cut down slightly in time.
The coaches gave plenty of teaching moments at the drawing board, as Head Coach Claude Julien continues to implement systematical adjustments.
Bergeron's group did rounds of sprints for about five minutes to end its practice, with the alternate captain, Chara and Adam McQuaid all starting a round of stick taps on the ice for the effort.
David Pastrnak did not skate in either session and remains out day-to-day with a tweaked shoulder after he started camp on Krejci's right wing. With much fanfare around Pastrnak heading into camp, a reporter asked Head Coach Claude Julien following Monday's practices if his absence affects his chances to make the team.
"I have no idea, you'd have to ask the GM that," said Julien. "As far as I'm concerned, he's day-to-day, so whenever we see him back, we've still got some time before the regular season, but you can't control that, and we'll see when he's ready to come back."
Julien was then asked if it was reasonable to think Pastrnak will be back in time to play preseason games.
"No idea. To be honest with you, I've been told he's day-to-day, so what does that mean? Exactly what they're saying. It's not a dislocated shoulder, it's not anything like that. It's some sort of a bruised shoulder, so we've got to wait and see how it heals," Julien said.
With Pastrnak injured, Matt Fraser and Loui Eriksson skated on David Krejci's wings during the Black & Gold Scrimmage. They remained a trio during Monday's practice.
Lines don't account to much right now, other than the coaching staff and management wanting to place young players with veterans or in situations where their skills sets will be showcased.
It's still interesting to note, though, that Daniel Paille, Ryan Spooner and invite Simon Gagne have been together on a line since the start of camp. For what it's worth, they seem to be generating enough chemistry to stay with each other for now.
The same goes for Brad Marchand, Patrice Bergeron and Seth Griffith. While Marchand and Bergeron continue to pick up where they left off with their ability to find each other on the ice, Griffith keeps getting an opportunity to learn from them.
"We're not doing anything except giving guys opportunities," said Julien, of players like Griffith being placed in advantageous situations.
There are many question marks around the roster, and it's been intriguing to see who sticks out each day, with certain linemates or with certain drills.
The preseason game in Montreal should provide another indication of players bubbling up and starting to stand out among the rest.
"I think when you look at what we're trying to tweak in our system, you want to continue to work on those things during preseason, but it's also an evaluation of players trying to make the team," said Julien.
"It's also an opportunity for our players who have been here for years to fine-tune themselves and get themselves ready for the season. They're not going to play every game, so it's important that they take those games seriously and get themselves at the top of their game before the season starts."
It's not known yet who will be traveling to Montreal, as the players were being notified later on Monday. Tuesday morning's practices at TD Garden will be the best indication, as the group traveling usually skates first (follow live updates on Twitter @NHLBruins).
The full group breakdowns for Monday's practices can be found below.
First Group - 11:00 a.m.
Matt Fraser - David Krejci - Loui Eriksson
Anthony Camara - Carl Soderberg - Brian Ferlin
Daniel Paille - Ryan Spooner - Simon Gagne
Jordan Caron - Chris Kelly - Tyler Randell
Cory Kane, Rob Flick
Dennis Seidenberg - Johnny Boychuk
David Warsofsky - Kevan Miller
Chris Breen - Steve Eminger
Chris Casto - Frankie SimonelliGoalies:
Niklas Svedberg, Malcolm Subban
Second Group - 1:00 p.m.
Brad Marchand - Patrice Bergeron - Seth Griffith
Matt Lindblad - Alex Khokhlachev - Ville Leino
Milan Lucic - Ethan Werek - Alex Fallstrom
Justin Florek - Bracken Kearns - Jared Knight
Ben Sexton, Bobby Robins
Zdeno Chara - Dougie Hamilton
Joe Morrow - Adam McQuaid
Matt Bartkowski - Zach Trotman
Tommy Cross - Ben YoudsGoalies:
Tuukka Rask, Jeremy SmithInjured:
Gregory Campbell (minor mid-core issue, no timetable), David Pastrnak (tweaked shoulder), Linus Arnesson (tweaked groin)