MIAMI — LeBron James still can’t beat these Spurs — even with a triple-double.
King James said on the eve of The Finals the Spurs had “championship DNA’’ and those genetics spilled all over the American Airlines Arena floor last night.
San Antonio went fundamental on South Beach Thursday night, committed a ridiculously low four turnovers and stole Game 1 of the NBA Finals in a 92-88 thriller over the Heat by outclassing Miami in the fourth quarter.
With the Spurs up two, Spurs point guard Tony Parker hit the shot of the postseason — dribbling down the shot clock, falling down, getting back up, double-clutching as he dipped under James and banking in a 12-footer just barely beating the 24-second shot clock. It put the Spurs up 92-88 with 5.2 seconds left after the play was reviewed to see if he got the shot off in time.
Parker, with James dogging him in the final minutes, finished with 21 points and six assists. Tim Duncan, after an 0-for-5 start, added 20 points, 14 rebounds and four assists.
James, whose Cavaliers were swept out of the Finals by San Antonio in 2007, put up monster numbers — 18 points, 18 rebounds and 10 assists — but his 10th playoff triple-double wasn’t enough. Dwyane Wade had a great start but disappeared and finished with 17 points.
The Spurs defense forced four Miami turnovers in the first eight minutes of the fourth quarter after the Heat had just four through three quarters. San Antonio trailed by three after three quarters.
Long Island’s Danny Green hit a mammoth 3-pointer with 2:04 left to pump the Spurs lead to 88-81. It was Green’s fourth trey and the North Babylon product finished with 12 points.
Ray Allen made three free throws off a phantom Green foul to cut it to two points, but Duncan got fouled on a drive and he answered with two free throws with 1:08 left for a 90-86 lead.
The defending-champion Heat were confident going in.
“There aren’t any concerns,’’ James said an hour before tip. “We’re a well-prepared team.’’
But now the home-court advantage has been lost. Game 2 is Sunday before the series shifts to Miami for the next three.
Wade, slowed during the playoffs by a bruised knee, was active early, driving to the bucket, Wade poured in 13 points in the half — the most he’s had in the first half during the playoffs. Wade’s 5-of-8 showing propelled Miami to a 52-49 lead at intermission. Miami was hot from the 3-point stripe, making 6 of 15 treys, but this was an evenly matched battle with four lead changes and five ties in the half.
On the first possession of The Finals, Wade stole a Parker pass and finished on the other end for a dunk off a James feed. James finished with 10 points, eight rebounds and five assists in the half. It was sound basketball as neither team committed a turnover in the second quarter and each team had just two at intermission.
The Heat rallied from a 9-2 early hole to take a 24-23 lead after one. The Spurs, playing smooth and at a fast pace, hung in despite Duncan’s 0 for 5 start. He was scoreless in the first quarter as the Heat defense looked too athletic for him and Duncan also picked up two fouls, both questionable, a charge and blocking foul.
Duncan came on in the second quarter and finished with 12 points by intermission. He gave San Antonio a lift with a 12-foot buzzer-beater after taking an inbounds pass with .8 seconds left and draining the jumper, cutting the Heat’s halftime lead to 3.
Green helped the Spurs’ cause, drilling three 3-pointers in the first half in his Finals debut.
San Antonio, coming off a nine-day layoff, went on a 9-0 run to take a 9-2 lead. Parker and Tiago Splitter executed a pick and roll with the Spurs center laying it in. The Heat called timeout with 9:56 left, down 9-2.
marc.berman@nypost.com