The Penguins allowed three unanswered goals as they fell to the Canadiens 4-3 in Game Three of the qualifying round in Toronto.
The Pens led 3-1 halfway through the second period before the Habs took over.
Patric Hornqvist, Jason Zucker and Teddy Blueger lit the lamp for Pittsburgh.
The Pens trail the best-of-five series 2-1.
Game Four is tomorrow in Toronto.
(Photo by Andre Ringuette/Freestyle Photo/Getty Images)