Grzelcyk, whom the Bruins made the 85th overall pick in the 2012 NHL Draft, will now head to the pros after completing his fourth season with Boston University, having notched 23 points in 27 games in the 2015-16 campaign. While the start of his senior campaign was delayed by knee surgery, Grzelcyk was still named a first-team Hockey East All-Star for the second consecutive year. At 5-foot-10, 175 pounds, Grzelcyk is a smallish puck-moving defenseman in the mold of Torey Krug and his chances of graduating to, and succeeding in the NHL will hinge on his ability to handle the physical rigors of professional hockey. He's a long-shot to secure a roster spot this fall, but could be an in-season call-up candidate, especially if Krug ends up missing any time.

Grzelcyk is coming off ACL surgery, which will delay the start of his senior campaign at Boston University. As a result, Grzelcyk probably won't be ready to play until a month or two into the coming season. Once he returns to action, the 5-foot-10, 176-pounder will reclaim a key role for the Terriers. Down the road, the 21-year-old is a candidate to push for a roster spot with the Bruins; with his mobility, he has the potential to develop into a puck-mover in the mold of current Boston blueliner Torey Krug.

Grzelcyk, who the Bruins took in the third round of the 2012 NHL Entry Draft, is slated to enter his third season with Boston University this fall. Down the road, the 5-foot-9 blueliner has some upside at the NHL level as a smallish puck-mover in the mold of current Bruin Torey Krug.

Defenseman Grzelcyk, at 5-foot-9, 174 pounds, is undersized, but his mobility and offensive instincts give him a chance to develop as a puck-moving blueliner for the Bruins in time. For now, the 2012 third-rounder will continue to polish his game at Boston University.