"I was as surprised as anybody else," Bruins coach Claude Julien said. "I can definitely tell you they lost a pretty important player on their roster, but that doesn't mean we change our game. I think it's important we stick with what we believe in."
Julien said Chara slipped and "had a little gash over his eye."
"Nothing serious," the coach said of his captain and No. 1 defenseman, who still managed to lead the team in ice time.
Quenneville was less forthcoming with information on Hossa's malady, sticking to the standard NHL diagnosis: Upper body.
"We'll say 'day-to-day.' We're hopeful he'll be ready for the next game," he said, adding that it did not happen during warmups, as had been reported on the team's Twitter account and the TV broadcast. "It was a game-time decision after the warmup there. That's when we made the call, after warmup."
Hossa, who has three game-winning goals in the playoffs this year, was tied for the team lead with 15 playoff points and was third on the Blackhawks with 17 goals during the regular season.
It was a loss the Blackhawks couldn't afford.
Not with Rask stopping everything that came his way.
The backup to Conn Smythe-winner Tim Thomas in the Bruins' 2011 Stanley Cup run, Rask didn't face as difficult a test as in the first period of Game 2, when the Blackhawks sent 19 shots at him but managed just one goal.
The Bruins outshot Chicago 26-18 and led 2-0 after two periods. The Blackhawks had a 10-9 edge in the third, including a late flurry on a 6-on-4 — a power play with Crawford pulled for an extra skater — that led to Bryan Bickell's shot off the post with 42 seconds left in the game.