Martin St. Louis celebrates his 900th career NHL game, with a hat trick in Tampa.

Martin St. Louis and Vinny Lecavalier team up for a beautiful give-and-go in the second period.

Per TSN:

Tampa Bay Lightning defenceman Victor Hedmanhas a concussion and will be sidelined indefinitely.

Lightning general manager Steve Yzerman announced the injury during the first intermission of Saturday’s game between Tampa Bay and Carolina.

“You have to be very careful,” Hedman said after the Lightning’s 5-2 win over the Hurricanes. “I feel a little bit better than when it happened, so that’s progress. There’s no timetable for my return.”

Hedman was hurt in Tuesday night’s game against Philadelphia by what Yzerman called a clean check.

The defenceman has averaged almost 22 1/2 minutes a game this season, He had two goals and four assists.

“I’m trying to get better each day and see how it goes,” Hedman said. “See how the symptoms work out. Have to make sure I’m symptom-free when I get back on the ice, and right now I’m not. So that’s why I’m not playing.”

Hedman has not resumed working out.

Tampa Bay Lightning forward Steven Stamkos notches a hat trick on New Year’s Eve.

Steven Stamkos gets his 19th of the year, in overtime against Calgary, sealing the win for the Bolts.

Martin St. Louis tips home his 800th point in the first period against the Isles.