Jordan Staal has scored his second goal of the game while stretched out on his stomach at 6:32 of the third period to put Carolina ahead for good in their 5-3 victory over the Vegas Golden Knights and even the Stanley Cup Final after four games.
Game 5 is Thursday night at Carolina, who will potentially have two games on home ice to win their first Cup in two decades. The Golden Knights are searching for their second in four years.
Tuesday's (Wednesday AEST) clash was the first not decided by one goal.
A two-goal lead has disappeared in all four games in what has been a remarkable series, in which momentum often changes at a moment's notice. Each team has led by at least that many twice.