While his agent claims that it might only be a one-week injury, Tim Panaccio reports that Jakub Voracek will instead be sidelined for about one month.
Tyler Seguin (lower body) won't be back in the lineup for Game 4 against the St. Louis Blues.
Marcus Johansson (upper body) will be available to play in Game 4 on Wednesday night.
Mike Ribeiro was scratched in Game 3 against San Jose as a coach's decision.
David Backes scored twice in the Blues 6-1 blowout of Dallas in Game 3 to help St. Louis take a 2-1 series lead.
Patrick Marleau scored the Sharks' lone goal in a 4-1 Game 3 loss to Nashville on Tuesday.
Shea Weber scored a goal and added an assist in Nashville's Game 3 win over San Jose on Tuesday.
Brian Boyle scored the game-winning goal in Tuesday's 5-4 overtime win over the Islanders in Game 3.
PK Subban has been named a finalist for the 2016 NHL Foundation Player Award.
Artem Anisimov has undergone surgery on his right wrist.
Kris Letang has been suspended for one game for interference on Washington's Marcus Johansson.
Torey Krug has had successful surgery on his right shoulder.