Murray, who has a team-high 27 goals, sat out three games last week and returned to help Boston post important victories at Buffalo on Saturday and at Philadelphia on Monday. But after a physio session Tuesday morning he said he wouldn't be on the ice against the Toronto Maple Leafs later in the day. "I'm out," said the six-foot-three right-winger.
He has no idea when he'd be able to play his next game.
"With groins, it's tough," he said. "We'll take it day by day.
"We've got a few more games on the road on this trip and, hopefully, it's not too long. It's a nagging thing."
Patrice Bergeron, another top Bruins forward, was questionable for the game against the Leafs. He missed the three previous games with a groin strain. He was the only player to skate - he was joined on the ice by assistant coach Marc Habscheid - during the Air Canada Centre ice time allotted to the Bruins. He declined to discuss his status afterwards.
Heading into Tuesday's games, Toronto, Montreal and the New York Islanders were tied for the eighth and last playoff berth in the NHL's Eastern Conference with 66 points each. The Bruins were six points behind, but they haven't given up hope.
"You look at the standings and it's tight, no question about it," said Murray. "There's five or six teams for two spots.
"It's a battle. Every game is important right now."
On the Leafs side, coach Paul Maurice had some optimistic news about the status of forward Darcy Tucker, who hasn't played since suffering hairline ankle fractures in late December.
"I'm hopeful he's going to be in some form or another back in practice by the end of this week or the start of next week," said Maurice.
Andrew Raycroft will get a 21st consecutive goaltending start Tuesday night.
"Our schedule has allowed this to happen," said Maurice. "When we get into a more difficult stretch in March we'll have to re-evaluate."