Golden State outlasted Cleveland 108-100 in over-time to win Thursday's opening game of the NBA Finals, the Cavaliers suffering another major setback with an injury to Kyrie Irving.
NBA Most Valuable Player (MVP) Stephen Curry scored 26 points and passed out eight assists while Klay Thompson added 21 points for the Warriors, who trailed most of the night but rallied late and dominated over-time after finishing deadlocked at 98-98 after regulation.
The first NBA Finals opener since 2001 to reach over-time was decided when Cleveland started with 0-for-9 shooting and made three turnovers while Curry, the NBA's most accurate free throw shooter, hit four from the line and Harrison Barnes added a 3-pointer to open the extra frame.
"It was just a classic five minutes that we needed to get that win," Curry said.
Cleveland superstar LeBron James scored 44 points, his best-ever showing in an NBA Finals game, while Irving added 23 points before the star guard limped off to the locker room after reinjuring his sore left knee, a grimace of pain on his face as he hobbled away, Australian reserve Matthew Dellavedova taking his place.
"Seeing him walk out of the locker room on crutches just now, that's a tough blow for our team," James said. "If Kyrie can't go, Delly's number is going to be called and everyone else has to pick each other up."
Irving had battled through left knee tendinitis for a solid scoring night plus seven rebounds and six assists.
"You don't like to see anyone get hurt but someone like Kyrie, it's disheartening," Cleveland's J.R. Smith said.
The Warriors, who improved to 47-3 at home this season in regular-season and playoff games, will host game two Sunday before the series shifts to Cleveland.
Golden State seeks its first title in 40 years while the Cavaliers are trying to bring the city of Cleveland its first champion in any major team sport since the NFL's 1964 Browns.
Golden State's reserves outscored Cleveland's bench 34-9, the Warriors paced by 15 points and tough defensive work on James from Andre Iguodala.
"He was fantastic," Warriors coach Steve Kerr said. "Andre is one of the smartest defenders I've ever seen. It's funny to say when a guy gets 44 points that the defender did a really good job, but I thought Andre did extremely well, made LeBron take some tough shots."
James, who became the first player since 1966 to appear in his fifth consecutive NBA Finals, went 18-of-38 from the floor and 6-of-10 from the free throw line.
"We had five guys guarding him all night," Curry said. "We just had to stick with the game plan and trust in our guys."
Russia's Mozgov nets 16
Cleveland center Timofey Mozgov, the first Russian in an NBA Final, added 16 points and Tristan Thompson pulled down 15 rebounds for the Cavaliers.
An Iguodala 3-pointer launched a 12-2 Warriors' run late in the fourth quarter, Golden State retaking the lead at 94-93 on Curry's jumper from the top of the key with 3:34 to play and adding to it on two Klay Thompson free throws.
James responded with a 3-pointer to pull the Cavaliers level at 96-96 with 2:38 remaining in regulation.
Curry sank a jump shot to put Golden State back on top in the final minute but Mozgov was fouled by Golden State's Aussie center Andrew Bogut and hit two tense free throws to pull the Cavaliers equal again at 98-98.
Curry drove to the hoop on the next Warriors possession but Irving was able to deflect the shot from behind and deny the basket. Cleveland's Iman Shumpert missed a shot at the buzzer and the teams regrouped for over-time.