Coach Joel Quenneville said Hossa's availablity would be a game-time decision. Hossa did not practice Saturday morning and had missed Friday's drills as well.
Winger Viktor Stalberg was cleared to make his regular-season debut.
"It's feeling good," Stalberg said of his knee. "It's the way I wanted to feel. I feel like I'll be ready to play. I haven't played in a couple weeks so it will be a little different. Short shifts, I guess."
Stalberg played with a brace on his left knee.
"Technology these days," Stalberg said. "[It's] pretty comfortable. I can't really notice it. That's not an issue at all, to be honest."
The Blackhawks-Bruins matchup featured the past two Stanley Cup-winning teams. It's the only time they will face each other this season.
Jesse Rogers covers the Blackhawks for ESPNChicago.com and ESPN 1000.