Colin Greening was Ottawa's only goal scorer in a 4-1 loss to Pittsburgh in Game 1 of the Eastern Conference Semifinals Tuesday night. Erik Condra and Jared Cowen picked up assists on Greening's first marker of the postseason. Greening didn't have a point against Montreal in five games during the opening round. Cory Conacher ended up with four penalty minutes, while Mika Zibanejad, Milan Michalek and Marc Methot led the Senators with four shots on goal apiece.