Letang cut it to 4-3 at 10:57 of the second period with a wrist shot through traffic from the high slot, and Guentzel tied it 4-4 at 18:05, deflecting a one-timer from Malkin six seconds into a power play.
"It just wasn't good enough," said Penguins forward Jason Zucker, who had a four-game goal streak end. "No answers, but we've got to figure it out. It's not good enough."
NOTES:Pittsburgh defenseman Jeff Petry (undisclosed) did not play in the third period, and defenseman Jan Rutta left the game at 4:06 of the third after taking a shot from David Savard off the inside of his left knee. Sullivan did not have an update on either player after the game. … Gurianov extended his point streak to four games (three goals, one assist). … Penguins defenseman Dmitry Kulikov did not play and is week to week after sustaining a lower-body injury in a 3-2 overtime win against the New York Rangers on Sunday. Pierre-Olivier Joseph played in his place. … Malkin extended his point streak to six games (one goal, nine assists). … Barron had two assists, five hits and one blocked shot in 13:14 of ice time after missing six games with an upper-body injury. … Crosby extended his point streak to five games (two goals, six assists).