The Penguins don’t know when their next game will be played.

They are pretty sure defensemen Brian Dumoulin and John Marino will be in their lineup when it happens.

That is very good news for the Penguins. They were an outstanding team with Dumoulin and Marino in the lineup this season and hovered somewhere between mediocre and bad when they were out with injuries.

“Those two guys are an important part of our blue line,” coach Mike Sullivan said. “We’re certainly looking forward to the opportunity to return to play so that we can get some of these players playing consistently in a healthy form.”

Dumoulin had surgery to repair lacerated tendons in his left ankle Dec. 1 and missed the next three months. He also missed four games in October with a lower-body injury.