The Golden Knights tied it 2-2 at 13:32 of the second. Gibson made a save on Hutton from in close, but his follow-up shot went off a skate and into the net for his first goal since March 10 (30 games).
Vegas outshot Anaheim 17-7 in the first period and 20-5 in the second.
"We had a lot of really good chances," Vegas defenseman Alex Pietrangelo said. "I mean, [51] shots, you've got to find a way to capitalize."
Each team went 0-for-5 with the man-advantage.
"Either team scores on the power play, it probably doesn't end up going to a shootout, right?" Cassidy said.
NOTES: Hutton was in the lineup because Alec Martinez sustained a lower-body injury in a 4-2 loss at the Los Angeles Kings on Tuesday. ... Vegas forward Michael Amadio assisted on Hutton's goal to give him an NHL career-high five-game point streak (three goals, four assists) ... Pietrangelo played 34:16, an NHL career high. ... Stone has four goals in the past four games. … Henrique has scored two goals 25 times in his NHL career but does not have a hat trick in 803 games. ... Paul Kariya (98 games) and Bobby Ryan (126 games) are the only Anaheim players to reach 100 points in fewer games than Zegras. ... Gibson leads the NHL with 10 games with 35 saves or more this season, and five games with 40 or more. … Ducks defenseman Urho Vaakanainen had one shot and three hits in 15:13 after missing three games with an illness.