PREVIEW: Blackhawks vs. Bruins - Sept. 21

TRIMMED DOWN

The Blackhawks have re-assigned 10 players since Wednesday's win over the Red Wings, sending goalie Alexis Gravel back to the Halifax Mooseheads (QMJHL) on Thursday, assigning nine skaters to Rockford on Friday and sending 12 more players there on Saturday afternoon as the IceHogs get set to open their training camp on Sunday. 

UNDEFEATED BRUINS

The Bruins are 1-0-1 on the preseason, with a 4-3 OT loss to the Devils on Monday and a 3-1 win over the Flyers on Thursday. Boston's seven goals this preseason have been scored by seven different players: Chris Wagner, Oscar Steen, Jacob Studnicka, Peter Chelarik, Danton Heinen and Connor Clifton.

Chicago is 1-1-1 and has eight preseason goals from seven different players.

Video: Inside the Locker Room: Alex Nylander

SIX AND SEVEN

On the defensive end, Jeremy Colliton will send out the same pairing in a second game for the first time this preseason. Brent Seabrook and Olli Maatta will continue their defensive tandem after a strong showing in Wednesday's win over Detroit, and it's a pairing that the 25-year-old newcomer likes. 

"I think he's a really smart player and he talks a lot, I think that's a big thing so we can get on the same page," Maatta said. "Obviously in these games, it's not going to be perfect. Mistakes are going to happen and stuff is going to happen, but you learn from them. That's why you play the preseason games."

Even though it is preseason, those mistakes were few and far between on Wednesday. Seabrook and Maatta were first and third in time on ice, respectively, including 2:30 each on the penalty kill as the top shorthanded pairing. The only goal they allowed came while down a man as Seabrook blocked a shot in front and the rebound fell right to a waiting Tiro Hirose at the side of the goalmouth.

With two more days of practicing together under their belt, another solid showing could put the duo well on their way to an opening-night pairing.

"You're trying to build (chemistry) every day in practice and watching video," Maatta continued. "He loves talking about things and he's obviously a veteran guy, so he knows the game really well."

Video: Blackhawks vs. Bruins game preview

PROJECTED LINEUP

ROSTER