OTTAWA -- For the second Monday night in a row, the Senators upset an NHL powerhouse on home ice.
Center Zack Smith, winger Bobby Ryan, defenseman Erik Karlsson, center Kyle Turris and winger Cory Conacher each scored in Ottawa's 5-0 win over the Pittsburgh Penguins at the Canadian Tire Centre.
Senators goaltender Craig Anderson made 27 saves for his second shutout of the season and 24th of his career.
The setback ended Pittsburgh's seven-game winning streak, while the Senators tasted victory for the first time since a 3-2 victory over the St. Louis Blues four games ago.
Penguins goalie Marc-Andre Fleury stopped 24 shots as Pittsburgh's record dropped to 27-11-1. The Senators are now 15-17-7.
The Senators took a 2-0 lead into the third when Karlsson added to their comfort level at the 1:36 mark, stepping around Penguins defenseman Olli Maatta and firing a shot over Fleury's shoulder for his 10th goal of the season. Turris added more padding at 12:42, converting a pass from Karlsson into an open net for his ninth of the season.
Conacher's third goal of the season at 14:02 of the final period ended his goal-less slump at 30 games.
Ryan notched his 17th of the season at 5:46 of the middle frame, deflecting a point shot from defenseman Chris Phillips with the Senators on a power play. With a 2-0 lead for the third game in a row, Anderson made sure the Senators held on to it this time by making breakaway stops off Penguins center Brandon Sutter and winger James Neal before the second intermission.
Smith opened the scoring at 6:54 of the first period, winning an offensive zone faceoff then going to the net for a rebound after Fleury stopped a point shot by defenseman Cody Ceci. The goal was the seventh of the season for Smith.
NOTES: Penguins LW Pascal Dupuis left the game early in the first period with a lower-body injury. Dupuis was skating toward the net when Senators D Marc Methot hip-checked Penguins C Sidney Crosby, driving him into Dupuis. ... Senators F Mika Zibanejad was scheduled to return from a one-game absence caused by an upper-body injury when he came down with the flu just before the opening faceoff. With Zibanejad out, tough-guy LW Matt Kassian dressed for the third game in a row. ... Senators W Bobby Ryan's second-period goal kept him from equalling his longest goal slump of the season. Ryan has only gone four goals without a game once. ... Crosby entered the night on a 10-game point scoring streak and with at least one point in 31 of the team's 38 games. ... Penguins G Marc-Andre Fleury was playing in his 499th NHL game. ... Senators D Cody Ceci recorded his first NHL assist in the opening period. The former first-round pick had one goal in his first six games.