Jake Walman and Matt Savoie scored for the Oilers (25-19-8), who have lost two in a row and four of their past six (2-3-1).
"It’s obviously not the start to the homestand we were looking for,” said Edmonton captain Connor McDavid, whose team is 1-2-0 after the first three games of an eight-game homestand. “It was obviously not ideal, not a great start. Playing catch-up is tough in this League and you look pretty bad when you’re doing it. It wasn’t our best obviously right from the start.
“There’s 30 games left, we’re coming down the home stretch here. There’s no February this year, so it’s like we’re at the end of February. The sense of urgency has to go up in our group. The playoff race is really tight and we have to find a way to get points here, especially at home.”
Tristan Jarry made 16 saves for the Oilers.
“You always want to beat your old team. It doesn’t matter who or when, so obviously it always does mean a little extra,” said Jarry, who was acquired with forward Samuel Poulin by Edmonton in a trade with Pittsburgh for goalie Stuart Skinner, defenseman Brett Kulak and a second-round pick in the 2029 NHL Draft on Dec. 12. “But I think we obviously have to change some things and get better in some areas.
“I think if I could keep one or two of those out early it gives us a better fighting chance.”
Mantha made it 1-0 at 2:20 of the first period, tapping in a cross-ice pass from Brazeau as he crashed the net.
Mantha scored again 22 seconds later when he took a pass from Brazeau in stride into the offensive zone and slipped the puck under a sprawling Jarry on a breakaway for a 2-0 lead.
“The first one was awesome. You kind of expect it, but usually it doesn’t go through," Mantha said. “And the second one, I was really asking for it because I knew I was flying down alone and it was a great pass, heads-up play by him.
“Everyone played really well, that’s a big team win. Almost every line was able to find the back of the net, our kill was awesome and ‘Arty’ (Silovs) was great in net. It’s a great all-around night.”
Crosby pushed it to 3-0 at 2:57. He deflected Ryan Shea's centering pass into the slot past Jarry's glove.
Walman cut the deficit to 3-1 with a short-handed goal at 5:19 of the second period. Mattias Janmark knocked the puck away from Penguins forward Egor Chinakhov at the Oilers blue line and started a rush up the ice. Janmark then fed a pass to Walman, who skated into the slot and beat Silovs with a wrist shot to the glove side.