Puck Previews: Will the Flames, Hawks reignite playoff passion?

Here are your Puck Previews: Spotlighting the key games in NHL action, news and views as well as general frivolity. Make sure to stop back here for the nightly Three Stars when the games are finished. Preview: Calgary Flames at Chicago Blackhawks, 8 p.m. EST. Grudge match! The last time these teams met, it ended with a handshake and the Blackhawks turning their thoughts to Round 2 of the conference playoffs. But before that, it was a nasty little series that followed a nasty little regular season rivalry. Matchsticks and Gasoline has the Flames' preview; Second City Hockey has the Blackhawks' preview. Preview: Pittsburgh Penguins at Ottawa Senators, 7:30 p.m. EST. Interesting line shuffling from Senators Coach Cory Clouston at practice, as the Alex Kovalev(notes)-Mike Fisher-Daniel Alfredsson(notes) trio remains intact while Jonathan Cheechoo(notes) skates with Jason Spezza(notes) and Milan Michalek(notes). Meanwhile, the Penguins announce when they'll be rocking their ...