TORONTO -- Clarke MacArthur scored late in the third period to give Toronto a 1-0 victory against the Penguins at the Air Canada Centre tonight.
The loss snapped the Penguins' eight-game winning streak and dropped their record to 29-18-4.
MacArthur broke a 0-0 tie at 13:55 of the third when he took a pass in the right circle, then went to the net and pushed a forehand shot past Penguins goalie Brent Johnson.
Johnson was making his first start since Jan. 10, and his goaltending partner, Marc-Andre Fleury, spent the entire evening on the bench for the first time in 24 games.
Toronto goalie James Reimer made just his second start in the past 13 games and stopped 25 shots to earn the shutout.
Defenseman Ben Lovejoy returned to the Penguins' lineup after a five-game absence. He replaced Deryk Engelland, who is believed to have been injured late in the Penguins' 5-4 shootout victory against Toronto one night earlier at Consol Energy Center.
The Penguins appeared to take a 1-0 lead 77 seconds into the second period, when Chris Kunitz put the puck past Maple Leafs goalie James Reimer while being knocked into him by Toronto defenseman Cody Franson.
A video review, however, determined that Kunitz had used a "distinct kicking motion" to get the puck past Reimer and the goal was disallowed.
The Penguins are off until Saturday, when they will visit Boston at 1:08 p.m.