TAMPA, Fla. — Tampa Bay Lightning coach Jon Cooper didn’t want to jinx the defending Eastern Conference champion’s best stretch of the season.

“Let’s not talk about that,” Cooper said with a smile after Vladislav Namestnikov completed a hat trick in overtime and the Lightning beat the Pittsburgh Penguins 5-4 on Friday night to extend a season-high four-game winning streak.

Valtteri Filppula and Anton Stralman also scored for Tampa Bay and Steven Stamkos had two assists. Andrei Vasilevskiy made 36 saves.

Pittsburgh got goals from Kris Letang, Patric Hornqvist, Trevor Daley and Chris Kunitz. Evgeni Malkin had two assists, giving him 23 assists and 42 points in 31 games against Tampa Bay.

Namestnikov scored the winner from in close 2:11 into the extra session. The 23-year-old forward has three goals and five assists during a four-game point streak.

Marc-Andre Fleury made 20 saves for the Penguins.

Pittsburgh rallied from two down for a one-goal lead on third-period goals by Daley (10:13) and Kunitz (13:48) before Stralman tied it 4-4 with 4:39 left.

Tampa Bay made the Penguins pay for three penalties over a 69-second span midway through the second.

“We have to find a way to stay out of the penalty box,” Penguins coach Mike Sullivan said. “We can’t give a team that has that much firepower extended 5-on-3s like that.”