OAKLAND, Calif. — Undrafted Australian point guard Matthew Dellavedova outplayed, outhustled and shut down ice-cold MVP Stephen Curry as the NBA Finals took a wild and crazy turn at Oracle Arena on Sunday night.

LeBron James posted a triple-double but Dellavedova was a triple threat as the Cavaliers survived in overtime to win Game 2 in a 95-93 stunner and tie the series at one game apiece.

Despite James recording 39 points, 11 assists and 16 rebounds, it was the heroic Dellavedova who made the biggest plays late, including the game-winning free throws with 10.1 seconds left after grabbing an offensive rebound. And he shut down a mystifyingly awful Curry, who had a John Starks-like Finals night in shooting 5-of-23, including 2-of-15 from beyond the 3-point stripe.

James and Dellavedova quieted the loudest basketball house in the land and silenced the talk the Cavaliers were dead.

Kevin Love was out. Kyrie Irving was out. But the Cavs are “All In’’ — as the T-shirts to be distributed at Quicken Loans Arena will read for Game 3 Tuesday.

“We’re without two All-Stars,” James said. “I don’t know any other team in this league who can do that and compete and be a force.”

The Cavs blew an 11-point lead in the final 3:11 of regulation. In overtime, trailing by 1 with 25 seconds left, James got blocked at the rim by Draymond Green on a drive, but they maintained possession as the ball went out-of-bounds.

James Jones missed a 3, but Dellavedova crashed in to get the rebound and was fouled on the put back. He made both free throws to give the Cavs a one-point lead. His work on messing up Curry’s rhythm was shocking, as analytics show Curry didn’t have one bucket with the Aussie defending him.

“It had everything to do with Delly,’’ James said. “He kept a body on Steph. He made Steph work. He was spectacular, man, defensively. We needed everything from him.’’

It was James’ first win in The Finals as a Cavalier and Cleveland’s first win ever in The Finals, and they did it with lunch-pail defense, as they shot just 32 percent.

“It’s the Grit Squad we have,’’ James said. “It’s not cute at all. If you’re looking for us to play sexy, cute basketball, it’s not us. Nothing comes easy.’’

Curry had a Starksian shooting night. After the Cavs took a 1-point lead, Curry misfired again with seven seconds to go in overtime, launching an airball. Starks was 2-for-18 for the Knicks in Game 7 of the 1994 Finals, costing them the title. It was Curry’s worst shooting night of the season and one of the worst of his career.

James made one of two free throws with four seconds left to put the Cavs up two, and Curry came down and had his pass knocked away by Tristan Thompson to end his nightmare.

“I thought I was a little hesitant when I had an open shot,’’ Curry said. “Shots I normally make, I knew as soon as they left my hand were off. That usually doesn’t happen. I doubt this will happen again with the adjustments I’ll make after I watch film. I’ve got to play better.’’

Dellavedova had replaced Irving, out for the Finals with a broken kneecap. He had a scoreless first half but came on strong with key buckets in the second half and a big hustle plays. He scored nine points with five rebounds, three steals and was a plus-15. He did have six turnovers.

“Just a team-defensive cover,’’ the modest Aussie said of Curry.

With Dellavedova becoming a starter, the Cavs had become major underdogs. “Our guys love it that we’ve been counted out,’’ James said. “Guys are using this as motivation.’’

James’ 3-pointer with 3:13 left in the fourth looked to have sealed it, jacking the lead to 83-72. But the Warriors roared back. J.R. Smith committed a pair of ill-advised fouls to help Golden State’s cause.

Dellavedova dove on the floor for a loose-ball rebound with the Cavs clinging to a two-point lead late in the fourth. But they couldn’t put it away. Iman Shumpert missed a right corner 3-pointer and Curry came down and threaded the defense for a layup to tie the score with 7.3 seconds left in regulation.

That set it up for James. Instead of settling for a stepback long-range jumper as he did at the end of Game 1, he powered down the lane, and put up a lefty layup with three Warriors chasing him. It banked off the rim and Thompson’s tip missed. The arena exploded as another OT was on the way before James and Dellavedova quieted all of Oakland.