Already down five regulars, the Bruins suffered another blow Sunday night when they lost defenseman Dougie Hamilton to an apparent leg injury after a first-period collision with Leafs defensemen Carl Gunnarsson.
Coach Claude Julien told reporters in Toronto that Hamilton would return home Monday for medical evaluation and probably would miss at least a week.
Fellow defensemen Adam McQuaid and Johnny Boychuk already were out, but Julien said he was "more optimistic than pessimistic" that Boychuk could return Tuesday at Calgary. The Bruins' trip through Canada also includes stops in Edmonton (Thursday) and Vancouver (Saturday).
Late in the game, Kevan Miller, who was called up this weekend to help on the blue line, left a little woozy after being crunched into the boards by Leafs captain Dion Phaneuf, but Julien said Miller should be OK.
"It's very minor and shouldn't impact him playing for us next game but it was a close call -- head first into the boards," Julien said.
Miller scored his first NHL goal on a wrist shot from the blue line at 15:58 of the second period.