Steven Stamkos wanted to make something happen. Coach Guy Boucher said it was not the right time.

And really, if Stamkos' shot had hit the net, perhaps we're having a different conversation.

But it didn't, and with Lightning defenseman Eric Brewer too far forward on the rush, the Bruins gained a two-on-one that ended with Brad Marchand's power-play goal with 2:16 left in the third period and a 3-2 victory Saturday at TD Garden.

It was the fourth straight loss and fifth in six games for Tampa Bay (9-11-1), which had been up 2-0 in the first period on power-play goals by Stamkos, his league-best 15th, and Alex Killorn.

"I was trying to get the puck on net," Stamkos said. "That's the way things are going right now. When things aren't going your way, you don't get the bounces, and that was not a good one."

"We were on a penalty kill," Boucher said. "Our defenseman jumps into the play. We're thinking offense. We're not thinking the right thing on that one."