Stefan Noesen broke a tie 4:20 into the third period, Connor Brown also scored, and Nico Hischier had two assists for the Devils (20-14-1), who have won four of their past six games (4-2-0).
Daniil But scored his first NHL goal, and Karel Vejmelka made 20 saves for the Mammoth (17-17-3), who had won three of four. Alexander Kerfoot made his season debut after missing the first 36 games with a lower-body injury.
But gave Utah a 1-0 lead on the power play at 9:35 of the first period, firing a backhanded shot past Markstrom. He was a first-round pick (No. 12) by the Arizona Coyotes in the 2023 NHL Draft.
Brown tied it 1-1 at 11:41 of the second period, beating Vejmelka on the blocker side.
Noesen’s power-play goal put the Devils ahead 2-1 at 4:20 of the third period, tapping in a rebound of Hischier’s shot.
New Jersey killed a 6-on-4 power play over the final 1:21 with Vejmelka pulled for the extra skater after Dawson Mercer’s tripping penalty against Barrett Hayton at 18:39.
