The Utah Mammoth’s first taste of playoff hockey delivered everything it promised—speed, chaos, physicality—and then ended in a gut punch.

The Vegas Golden Knights rallied from multiple deficits to defeat Utah 4–2 on Sunday night in Game 1 of their first-round series, flipping what felt like a tightly controlled debut into a third-period collapse for the visitors.

Vegas, now unbeaten in regulation in its recent stretch under head coach John Tortorella (8-0-1), once again leaned on relentless pressure and depth scoring to overwhelm Utah late. Colton Sissons led the charge with a goal and an assist, while Mark Stone and Ivan Barbashev also found the back of the net. Carter Hart turned aside 32 shots, and Noah Hanifin chipped in two assists from the blue line.

For Utah, Logan Cooley and Kevin Stenlund provided the offense, and Karel Vejmelka stopped 27 shots in a game that featured momentum swings, heavy contact, and a simmering edge that boiled over several times—including a post-buzzer altercation.

A Playoff Introduction Built On Emotion And Momentum

Utah didn’t just show up—they struck first, and nearly carried that energy into intermission.

Former Golden Knight Nate Schmidt threaded a perfect cross-ice feed to Logan Cooley, who buried a one-timer from the right circle with just 11 seconds left in the opening period. It was the kind of moment that briefly quieted the building and hinted at a dream start for the league’s newest postseason entrant.

The second period, however, belonged to chaos.