Jake Guentzel scored a hat trick, Point had a goal and three assists, and Anthony Cirelli had a goal and two assists for Tampa Bay (15-10-2), which has won three of four. Andrei Vasilevskiy made 19 saves in his 500th NHL game.
"He's been the backbone of this team, backbone of this franchise for the last decade here," Tampa Bay defenseman Ryan McDonagh said. "Credit to him. He's so consistent and hungry to win and we feed off his competitiveness. Great for us to come through in a milestone game for him."
Jonathan Huberdeau had a goal and an assist, and Connor Zary and Nazem Kadri scored for Calgary (14-11-5), which has lost seven of nine (2-5-2). Dan Vladar made 18 saves.
"Just didn't defend very well ... that's what it comes down to," Kadri said. "That was pretty nonexistent. Did a good job trying to get back into the game but just gave them too many opportunities and that's what good players do. They shove it down your throat."
Lightning defenseman Victor Hedman did not play because of a lower-body injury and is day to day, and defenseman J.J. Moser left the game in the second period because of an apparent lower-body injury and is doubtful for Saturday's game at the Seattle Kraken. Tampa Bay is also without defenseman Erik Cernak, who has missed two games because of a lower-body injury.
"It's a tough league to stay healthy in, and we got banged up in Vancouver (a 4-2 win on Sunday) and we're just trying to hold it together here until we get home," Lightning coach Jon Cooper said.
Huberdeau put Calgary up 1-0 at 4:42 of the first. Cirelli backchecked to knock the puck away from Martin Pospisil on a 2-on-1 rush, but he inadvertently swept it over to Huberdeau before he shot by Vasilevskiy.
Kucherov tied it 1-1 at 18:40 with a shot by Vladar's blocker on a breakaway created by a Huberdeau turnover at the Lightning blue line.
Guentzel put Tampa Bay up 2-1 at 6:25 of the second period, shooting over Vladar's pad and under his glove off the rush, and Point extended the lead to 3-1 at 7:55 when he one-timed a one-touch pass from Kucherov on the power play.