Chris Pronger, the Philadelphia Flyers defenseman injured Wednesday night against Montreal, will have surgery on Friday afternoon and is likely to miss four to six weeks, the team said.
Flyers defenseman Matt Walker needs hip surgery and is expected to miss more than two months.
The Tampa Bay Lightning have obtained longtime Philadelphia Flyers forward Simon Gagne.
Defenseman Matt Walker scored one goal and created another a few minutes later when his shot deflected in off Vincent Lecavalier, helping the struggling Tampa Bay Lightning edge the NHL-leading Washington Capitals 3-2 on Friday night.
Center Ryan Johnson and defenseman Matt Walker signed contracts with the Blues on Thursday.
Penguins forward Matt Cooke has been suspended two games without pay for a blow to the head of an opposing player.
Nashville traded forward Scott Walker to Carolina for center Josef Vasicek on Tuesday, and in another move the Hurricanes brought back Shane Willis.