Malkin will miss at least two games after being added to the COVID-19 protocol list. He will be eligible to be activated for Sunday's game in New Jersey. Jeff Carter will likely shift to the No.2 centre while Malkin is out.
Grzelcyk has missed the last two games but will be a game-time decision in Arizona. If Grzelcyk plays, expect him to skate on the top pairing with Charlie McAvoy and the second power-play unit.
Bemstrom was a healthy scratch on Wednesday but will replace Alexandre Texier (upper-body) in the lineup on Thursday. Bemstrom has one goal and two assists (three points) in 10 games this season.
Grzelcyk skated on Tuesday and Wednesday but needs a "couple more days" according to head coach Bruce Cassidy. Urho Vaakaninen will remain on the top pair with Charlie McAvoy with Grzelcyk is out.
Karlsson underwent surgery to repair a small muscle tear in his left forearm on Monday and will miss at least 6-to-7 weeks. This is a terrible break for Karlsson, who was having a resurgent year, scoring eight goals with 18 assists (26 points) in 33 games. Ryan Merkley will likely remain with the Sharks with Karlsson out.
Grzelcyk was hurt in an awkward hit on Saturday and will not be available for Monday's game vs. the Ducks. The Bruins will get Mike Reilly (COVID-19 protocol) back to replace Grzelcyk.
