But unlike the Islanders' challenge against Florida in last year's playoffs, Tuesday's didn't turn the momentum of the period. Kucherov beat Greiss short side his second power-play goal of the period at 12:18, while Stamkos finished a tap-in play from Slater Koekkoek at 13:34 to make it 3-0. The third goal prompted the Islanders to put Jaroslav Halak in goal.
"Arguably the best power play in the league and they got two early on us," John Tavares said. "They have their top two or three lines going out there touching the puck 10 or 12 times in the first seven or eight minutes and some of our guys didn't play a shift yet, so you get out there and you're stone cold trying to get our game going. It just spiraled down from there. They got a third and that really put us behind the eight ball."
The Lightning kept coming in the second period, with Brian Boyle, J.T. Brown and Valtteri Filppula extending the deficit to 6-0. Boyle beat Halak up high with a backhander in tight, Brown was sprung on a shorthanded breakaway by a wide shot that kicked off the glass and into the middle of the ice and Filppula's was a deflection that bounced off an Islander in a netfront pile and in.
Seidenberg put the Islanders on the board with 30 seconds to play in the second period, ending Ben Bishop's shutout bid. Seidenberg's goal also marked the sixth straight game an Islanders defenseman scored, the longest streak in the last 29 years.
The teams played a scoreless third period. Greiss finished with eight saves to Halak's 22, while Ben Bishop made 26 saves in the win.
"You always try to learn from it, but it's a long season and we have a lot of games coming up," Tavares said. "We just have to put it behind us, get better tomorrow and be ready to play Thursday."