The Bruins have scored one power-play goal in each of the first three games. Brad Marchand scored their only power-play goal in Game 3, giving him seven goals in his past seven games.
The Lightning were 3-for-6 on the power play in Game 3 and scored on three straight chances after failing to convert on their first opportunity of the game. Before those three goals, Tampa Bay had not scored on its previous 17 power-play opportunities.
"We've been on the wrong end of those pretty much this entire playoffs," Cooper said. "Probably as many power plays [in Game 3] as we've had in a couple weeks combined, and you have to take advantage of them."