Dylan Guenther scored the overtime-winning goal to give the visiting Utah Mammoth a wild 5-4 victory over the slumping Pittsburgh Penguins on Sunday.
Michael Carcone scored twice while Nate Schmidt and Sean Durzi added singles for the Mammoth, who erased a three-goal, third-period deficit.
Goaltender Karle Vejmelka made 12 saves.
Guenther notched the winner 42 seconds into overtime with a wrist shot from the slot for his fifth tally in a four-game streak.
Justin Brazeau scored twice for the Penguins, who have lost five straight games, four of them in extra time. All those defeats beyond regulation time came despite Pittsburgh leading in the third period.
Ben Kindel tallied once and added an assist, Bryan Rust scored in a third consecutive game and goalie Sergei Murashov stopped 32 shots.
Pittsburgh remains without goalie Stuart Skinner and defenseman Brett Kulak, who were acquired via trade on Friday but going through the immigration process.
For the second time in as many days, the Penguins staked a big lead and then watched it disappear.
Brazeau gave the Penguins first blood just 48 seconds into the clash when a pass attempt banked into the net off the skate of a defender.
Rust doubled the lead and ran his goal-scoring streak to three games at 15:21 by chipping a shot home from in tight, and then Kindel made it 3-0 by converting a clear breakaway at 5:40 of the second period.
Then the game became similar to Pittsburgh’s 6-5 loss to San Jose on Saturday in which the Penguins had a 5-1 lead going into the third period.
The Mammoth roared back to take the lead with four consecutive goals. Schmidt put them on the board 67 seconds into the third period when he buried a rebound .
Carcone added another 15 seconds later by banking a second chance off the goaltender after his shot off the rush was denied and then Durzi made it a one-goal game at 5:35 with a sharp-angled shot while there was traffic in front.
The Penguins challenged the goal for interference, and it was denied, which gave the Mammoth a power-play opportunity that paid off when Carcone converted a one-timer from the right face-off dot.
Just as the Penguins were losing all momentum, Brazeau responded with his second of the game, a nifty deflection, but the hosts were unable to regain the lead.
