Paul Culina, the University of Maine’s hockey trainer, said the Black Bears’ current break couldn’t have come at a better time.

Maine won’t play again until it visits Northeastern for a Dec. 3-4 series.

The 9-0-2 Bears, the only undefeated Division I team in the country, have 15 players who are receiving treatments from Culina. Five of them, all forwards, either missed Saturday’s 3-0 victory over Brown or had to leave the game.

Left wing Magnus Lundback left in the first period with a recurrence of his accelerated heart beat and center Chris Heisten suffered a sprained elbow in the second period and was sidelined.

Lundback will undergo more specialized testing and will be sidelined indefinitely but Heisten could be back for Northeastern.

Culina said Robert Liscak has a torn knee ligament and will be sidelined indefinitely. Niko Dimitrakos has a sprained shoulder and some tears but could be back for the Northeastern series and Tommy Reimann has post-concussion syndrome and will undergo tests in Boston on Tuesday.

Reimann, who has suffered two concussions, still has headaches.

Senior center Brendan Walsh continues to play on a surgically repaired kneecap and junior defenseman A.J. Begg has a right groin injury.

“This break for us is huge. It really is a blessing,” said Culina, who added that this is the most injuries at one time that he has witnessed in his five years with the program.

Despite the injuries, Maine has held its opponents to an average of 2.1 goals and 25.9 shots on goal through its first 11 games. Maine has allowed only 13 goals in its last eight games.

Six of their wins have been by two goals or less.

“We have found ways to win,” said senior defenseman Anders Lundback. “We have been in a lot of close games. We have really played well defensively and if we do that, we can win most of our games.

“But we haven’t played the best teams so far. The rest of the schedule is much tougher,” added Lundback.

Brendan Walsh said, “We’ve won big games because of our commitment to defense. We aren’t a trapping team. We aren’t flashy. We just try to get the job done. And coach [Shawn Walsh] throws a lot of different curveballs at our opponents. We could have three lines with three different forechecks.”

Maine coach Walsh said, “We’ve got a blue-collar team that has received great goaltending. We’ve received better goaltending during the regular season than we received last year. But Alfie [Michaud] was phenomenal in the playoffs.

“And our defense corps is tough,” added Walsh.

Mike Morrison is 6-0 with a 2.00 goals-against average and a .922 save percentage and Matt Yeats is 3-0-2 with a 2.13 GAA and a .917 save percentage.

Merrimack coach Chris Serino said he considers Maine’s forwards to be very talented and added that they have the work ethic to complement their talent. He also said, “Maine’s defensemen may not be the most skilled in the league but they’re close and they play good defense.”

Maine has received goals from 13 different players with senior center Cory Larose and sophomore left wing Barrett Heisten leading the way with six each.