Stephen Curry produced a dazzling 43-point display as the Golden State Warriors battled past the Boston Celtics 107-97 to level the NBA Finals series at 2-2 on Friday.

With the Warriors needing a victory at Boston's TD Garden to avoid going down 3-1 in the best-of-seven series, Curry delivered one of the best performances of his glittering career to reignite Golden State's hopes of a seventh championship.

Curry had entered game four with concerns swirling over his health after suffering a knock to his foot in the Warriors' game three defeat on Wednesday.

But the 34-year-old two-time NBA Most Valuable Player emphatically laid to rest any doubts about his fitness as he single-handedly hauled Golden State back into the finals with game five back in San Francisco on Monday.

Curry finished with 43 points, 10 rebounds and four assists on a night when Golden State again struggled to find their offensive rhythm for long periods against a powerful Boston line-up.

Klay Thompson added 18 points for the Warriors while Andrew Wiggins produced 17 points and 16 rebounds in a crucial contribution. Jordan Poole added 14 from the bench.

"A lot of pride in our group, a lot of talk over the last 48 hours about how we can get back into this series," an elated Curry said afterwards.

"It's crazy because I still feel we can play a little bit better. But to win on the road and get home court advantage back, is big for this group. We've been here six times, we've got a lot of experience of staying confident and composed.

"I'm just thankful for everyone on our team because we brought a lot of toughness and physicality tonight.

"We knew how big this game was. That five-and-a-half hour flight home got a little better after tonight."

Green struggles

Warriors coach Steve Kerr, meanwhile, took the bold decision to remove Draymond Green from the fray during the fourth quarter before returning him to the court for the closing passage of play.

Green again struggled on offense with only two points but finished with nine rebounds, eight assists and four steals.

But the undeniable man of the hour was once again Curry, a model of clear-headed composure as bedlam raged around Boston’s raucous arena.

"Just stunning," was how Kerr described Curry's performance. "The physicality out there is, you know, pretty dramatic. I mean, Boston's got obviously, best defense in the league.

"Huge and powerful at every position, and for Steph to that kind of pressure all game long and still be able to defend at the other end when they are coming at him shows you, I think, this is the strongest physically he's ever been in his career, and it's allowing him to do what he's doing."

Boston coach Ime Udoka was left pondering what might have been. The Celtics must now win at least one more game in San Francisco -- where they won game one -- to win a record 18th NBA crown.

"Had our opportunities tonight, especially when we did have a five-, six-point lead," Udoka said. "It felt like we didn't have our best possessions, and kind of let them back in the game, whether it was turnovers or poor offense.

"It could have been an easier road, obviously, if you get the win tonight. But it is what it is. We're 2-2 now. We know we can do it. We've done it before. Keep your head up and let's go get one on the road."

A closely-fought contest saw neither side lead by more than seven points until Golden State's decisive late burst in the final minutes secured a 10-point victory.

Boston had led by four points at 94-90 with just under five minutes remaining before a Wiggins layup and a Thompson three-pointer put Golden State up 95-94. Curry then extended the lead with a layup to make it 97-94 before driving in the dagger with a three-pointer to leave the Warriors 100-94 ahead.

Al Horford cut the deficit for Boston with a corner three, but Kevon Looney’s layup restored the Warriors' five-point cushion.

Curry then closed out the game, cleverly drawing fouls from Boston to nail five points from the free throw line.

Jayson Tatum led the Boston scorers with 23 points while Jaylen Brown finished with 21 points. Marcus Smart added 18 points and Derrick White chipped in with 16.