Nashville Predators captain Shea Weber is out indefinitely with a concussion.
The team said Tuesday the all-star defenceman suffered the injury in Friday's 6-3 loss to the Dallas Stars. There is no timetable for his return.
Weber joins a long list of high-profile players currently out with concussions, including Pittsburgh's Sidney Crosby and Carolina's Jeff Skinner.
The Philadelphia Flyers announced earlier this month captain Chris Pronger will miss the rest of the 2011-12 campaign with a concussion.
Weber has eight goals and 21 assists in 35 games for Nashville this season.
Joining Weber on the sidelines is Toronto Maple Leafs defenceman John-Michael Liles. He's out with concussion-like symptoms.
Liles took a big hit from Buffalo's Paul Gaustad in Thursday's 3-2 win over the Sabres.
The rearguard has four goals and 17 assists in 34 games with the Leafs this season.
Kings' Gagne won't make road trip
Los Angeles Kings forward Simon Gagne is not travelling with the team on its upcoming two-game road trip due to an upper body injury.
The team confirmed Tuesday that the 31-year-old veteran will remain in L.A. and is expected to be placed on injured reserve within 24 hours.
Kings officials would not confirm that Gagne is suffering from a concussion after getting "banged up" and sitting out the third period of Monday's 4-3 win over the Phoenix Coyotes.
The seven-time 20-goal scorer has a history of concussions and other injuries. He was shut down in the 2007-08 season after being diagnosed with a concussion.
The Kings take on the Blackhawks in Chicago on Wednesday and visit Winnipeg on Thursday.