Pittsburgh Penguins vs Boston Bruins is the big NHL game on tonight in the Stanley Cup 2013 Eastern Conference Finals, with the Penguins desperate to take Game 3 after losing the two opening encounters of the series.

The Bruins have the opportunity to finish off the Penguins tonight, and if they can win in front of their TD Gardens home crowd then they will put Pittsburgh on the brink at 3-0 down.

The game kicks off at 8 p.m. ET and can be watched online free via the live stream provided below.

The Penguins have an almost must-win game tonight – if they realistically want to win this conference title they cannot afford to fall 3-0 down with Game 4 also scheduled to take place in Boston.

But it's now a long way back for the Penguins, and they will have to win at least one of the next two games and to take the series back to Pittsburgh for a Game 5, where they would have to win before also equaling the series when they return back to Boston for Game 6.

The Bruins meanwhile will be flying after their 6-1 demolition of Pittsburgh in Game 2. The nature of they loss will have been demoralizing for Pittsburgh, and by the end of the game every single Penguins' player looked frustrated and fed up.

The Pittsburgh Penguins vs Boston Bruins game will start at 8 p.m. ET and can be watched online through free live stream by clicking here.