Point put the Lightning ahead 1-0 25 seconds into the second with his 20th goal.
"[Tyler Johnson] threw it to me, kind of just kicked it off my skate, took it to my backhand," Point said. "Don't know how it went in. Just jammed it and I think it went under [Neuvirth's] pad."
The goal gave the Lightning a lift after a first period when they had four shots on goal and didn't get their first until 7:05.
"He's got 20 (goals) but it's the timing of his goals," coach Jon Cooper said of Point. "Not only just that goal, he's got three overtime winners. Timely goals. When we need something to happen, we have a lot of guys that can step up for us. He seems to do it in a regular basis."
Cooper called Point, who was named Wednesday to the 2018 Honda NHL All-Star Game, "more often than not the straw that stirs the drink" for Tampa Bay after the morning skate.
"It's a joy to see him out there playing the way he is and the amount of goals -- that was his 20th. He's a huge contributor right now," Lightning defenseman Anton Stralman said. "Great to see. He's got a chance to be in the All-Star Game. It's great for him. He's one of the guys you really wish the best because he puts in the work and he's a great teammate and a good person and you're really happy for him."
Gourde made it 2-0 at 9:56 of the second, and then Callahan scored shorthanded at 17:29 to make it 3-0. Callahan tipped the puck past Flyers forward Jakub Voracek at the Lightning blue line and carried it into the Philadelphia zone. He deked around defenseman Shayne Gostisbehere, dragged it around Neuvirth, and scored his second goal of the season, first since Oct. 24.