"We came out obviously with a little bit more jump," Tampa Bay coach Jon Cooper said of the second period. "Now, it was helped by the fact that the power play was rolling. … When you go down 3-0, to be able to score pretty quick after that gave us a little bit of life, then we got that second one and you just see the confidence growing on us."
Alex Killorn made it 5-3 at 14:25 of the third period with a shot blocker side on Lankinen, and Pat Maroon pushed the lead to 6-3 at 17:25 with another power-play goal.
Philipp Kurashev gave Chicago a 1-0 lead at 10:51 of the first period, collecting a slap pass from Carl Soderberg before lifting a backhand over Vasilevskiy's left pad.
Janmark made it 2-0 at 15:34 when he batted the puck out of the air on the power play.
"[Dominik Kubalik] kind of tipped toward backdoor where I was, and it was just kind of a reflex," Janmark said. "I know the puck is somewhere there in the air, so just took a whack at it and was lucky to have scored from there."
NOTES:Tampa Bay defenseman Erik Cernak left at 9:27 of the second period after an illegal hit to the head by Chicago defenseman Connor Murphy, who was assessed a match penalty. … Defenseman Andreas Borgman had one hit and was minus-1 in 10:29 of ice time in his Lightning debut. … Blackhawks forward Alex DeBrincat had his eight-game point streak end (six goals, six assists). … Chicago defenseman Wyatt Kalynuk had two hits and was minus-2 in 10:50 of ice time in his NHL debut. … Maroon's goal was his 100th in the NHL. … Vasilevskiy is 8-0-0 in his career against Chicago.