Winger Carl Hagelin has been diagnosed with a concussion after taking a hit from Blues' forward Alexander Steen during Saturday's 4-1 win over the Blues.
"Haggy was diagnosed with a concussion," said head coach Mike Sullivan. "He's in the concussion protocol right now, he skated this morning on his own. We'll see how he responds from there and we'll go from there."
Hagelin has six goals and 13 assists in 51 games for Pittsburgh this season.