On the ensuing power play after the Penguins were penalized for delay of game, Carcone scored with a wrist shot from the right circle off a pass from Barrett Hayton to put the Mammoth ahead 4-3 at 7:06.
Brazeau was able to tie it 4-4 by deflecting a shot from Karlsson at 14:06, but the Penguins weren't able to complete their own comeback.
“You would have thought after yesterday that it would change a little bit,” Pittsburgh defenseman Erik Karlsson said. “But it didn’t.”
Brazeau gave Pittsburgh a 1-0 lead 48 seconds into the first period. He attempted a spinning backhand pass above the crease to Rutger McGroarty, but the puck instead went in off Schmaltz.
Bryan Rust made it 2-0 at 15:21, chipping in a loose puck in front after a pass from Carcone hit off Mammoth forward Kevin Stenlund.
Kindel extended the lead to 3-0 at 5:40 of the second period, scoring with a wrist shot on a breakaway.
The Penguins were then outshot 17-6 in the third.
“I don't think overall we had our best today,” Pittsburgh captain Sidney Crosby said. “But we still had enough to get a win, and unfortunately we didn't do that.”
NOTES: Guenther has five goals during a four-game point streak. Since the start of last season, he leads the NHL in game-winning goals (14). ... The Mammoth’s four goals in 5:59 were the fastest in franchise history. ... Penguins goalie Stuart Skinner and defenseman Brett Kulak were unavailable due to immigration issues for the second straight game after being acquired in a trade with the Edmonton Oilers for goalie Tristan Jarry and forward Samuel Poulin on Friday. Each was granted nonroster status on Saturday, leading to Murashov being emergency recalled from Wilkes-Barre/Scranton of the American Hockey League.