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NHL Tonight: Karlsson's impact

The guys on NHL Tonight discuss why the addition of Norris Trophy winner Erik Karlsson is not enough to turn Pittsburgh into a cup contender

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Tkachuk buries late go-ahead goal

NYI@OTT: Tkachuk jams it home with 13 seconds left in the 3rd

All of Thursday's goals

Check out all of the goals scored on Thursday night

Lyon blanks Sharks with 23 saves

BUF@SJS: Lyon fends off Sharks with 23-save shutout

Bedard's beautiful breakaway goal

CHI@MIN: Bedard doubles lead on backhand in 2nd period

Dahlin crashes the net to extend lead

BUF@SJS: Dahlin taps one home in front of the net

Bobrovsky shuts out Oilers

FLA@EDM: Bobrovsky earns his fourth shutout of season in Panthers' victory in Edmonton

Gourde with a slick tip-in

TBL@VAN: Gourde swats in Kucherov's shot, extending the lead in the 2nd

Byfield rips one top-shelf

PHI@LAK: Byfield snaps one in closing minute of 1st

Verhaeghe's 20th goal of season

FLA@EDM: Verhaeghe increases Panthers' lead late in game

DeBrincat's go-ahead goal

MTL@DET: DeBrincat buries a backhand for a 2-1 lead in 3rd

Reinhardt kicks off scoring

FLA@EDM: Reinhardt gives Panthers lead in opening period

Slafkovsky's opening PPG

MTL@DET: Slafkovsky breaks the ice with a PPG in the 2nd

Fantilli notches PPG

NYR@CBJ: Fantilli scores tip-in PPG for a 4-2 lead

Reichel doubles the lead

WPG@BOS: Reichel beats Hellebuyck to the net to score

Foegele tucks in a backhand

NYI@OTT: Foegele buries beautiful backhand shot

Schaefer wires in a shot

NYI@OTT: Schaefer snaps a shot from the top of the circle to score

Pinto answers back with SHG

NYI@OTT: Pinto wires in SHG to tie it

Pastrnak strikes first

WPG@BOS: Pastrnak buries opening goal

Lundestrom picks the corner

NYR@CBJ: Lundestrom goes top shelf to knot the game at 1

Trocheck's opening SHG

NYR@CBJ: Trocheck scores on breakaway for SHG and 1-0 lead

Cates comes through for Flyers in OT

PHI@ANA: Cates finishes rebound on 2-on-1 for overtime winner

All of Wednesday's goals

Check out all of the goals scored on Wednesday night

Walker nets beautiful one-timer for OT win

PIT@CAR: Aho sets up Walker for one-time OT winner

Hughes extends the lead

NJD@NYR: J. Hughes, Nemec team up for insurance goal

Makar nets 20th of season with PPG

DAL@COL: Makar bangs home one-timer for PPG, 20th of season

Johnston, Stars win it in the shootout

DAL@COL: Johnston, Oettinger spur Stars to shootout win

Glendening's first with the Flyers

PHI@ANA: Glendening opens scoring on one-timer at the doorstep

Ovechkin tips in opening goal

OTT@WSH: Sandin, Ovechkin team up to kick off scoring