"That was awesome to see," Pittsburgh forward Danton Heinen said. "It was a nice goal too. He's such a great guy, always smiling, a great teammate to have. It was awesome to see."
Boyle did not play in the NHL last season and signed a one-year contract with the Penguins on Tuesday after attending training camp on a professional tryout. The center's last NHL game was for the Florida Panthers when they were eliminated by the New York Islanders in Game 4 of the Stanley Cup Qualifiers on Aug. 7, 2020. His last goal came in Game 3 of that best-of-5 series two days earlier.
Heinen also scored in his Penguins debut, and Tristan Jarry made 26 saves. Pittsburgh scored three empty-net goals.
"Well, it's a big win for us," Penguins coach Mike Sullivan said. "Obviously, that's a really good team we're playing against. It's a real emotional night for them. It's one of those games that can go either way.
"I thought we came out with a lot of energy. I thought we played the game that we're trying to play. We were doing everything in fives in all three zones, and that's when our team is at its best."
Anthony Cirelli had a goal and an assist, Alex Killorn scored, and Steven Stamkos had two assists for the Lightning, the two-time defending Stanley Cup champions, who had won their past nine home openers. Andrei Vasilevskiy made 29 saves.
"It was a dud," Tampa Bay captain Steven Stamkos said. "I can't remember the last time we lost a home opener. It's been a long time. [The Penguins] had a depleted lineup with some really good players missing and they worked extremely hard tonight. They stuck to their structure and outworked us. We were chasing the puck all night."