According to a tweet sent out by National Hockey League's Department of Player of Safety on Thursday morning, Sundqvist will have a hearing for the hit.
"Obviously, it's one of those things where it happens fast on the ice," said Patrice Bergeron. "On that particular hit, I thought Grizzy was kind of facing that way the whole time. He was trying to handle the puck and go over to his partner. It seemed like he was in that position for a little bit of time to give enough time for that guy coming in to maybe change his route or try to avoid the head. But like I said, it happens fast. It's not always easy to do something."
Charlie McAvoy, a close friend of Grzelcyk's and his former teammate at Boston University, said he spoke with Grzelcyk on Wedneday night and again on Thursday morning and that he was "in good spirits" despite the injury.
"He was in our prayers last night," said McAvoy. "We weren't sure how he was feeling. But just in talking to him a little bit, I think he's in good spirits and obivously we're looking for him to rejoin us as quick as possible."
Should Grzelcyk have to miss any game action, Cassidy will have to decide whether Steven Kampfer of John Moore is inserted into the lineup. Moore, who has played in five games during the playoffs, appears to have the inside track because of his left shot.
"That's the easiest thing is to keep everyone on their strong sides," said Cassidy. "But we'll look at that a little more once we find out from Matt. We don't practice today, we're traveling. [Friday] morning we'll have a better idea, look at practice and then make our decision and ultimately decide Saturday. But Friday's practice will probably be a better indicator."