LOS ANGELES — Not again. No way.

Shades of the Lakers’ recent past cropped up when they led the Oklahoma City Thunder by 19 in the second quarter Thursday but lost all of it in the third.

It only got worse from there at Staples Center.

The Lakers fumbled away the game, 107-104, suffering their second hard-to-describe loss in eight days to the Thunder, who are 2-0 against the Lakers and 0-6 against the rest of the league.

The storylines were eerily similar. The Lakers led by 26 last week before losing in Oklahoma City.

“Early leads don’t really mean anything in the modern NBA,” Lakers Coach Frank Vogel said. “We learned that lesson last week.”

They’ll have to learn it again.

LeBron James did not play Thursday because of an abdominal strain that happened two days earlier in a close victory over Houston. He will reportedly miss at least one week.

He wasn’t the only dinged-up Lakers star: Anthony Davis sustained a sprained right thumb late in the second quarter Thursday when he smacked his thumb into Shai Gilgeous-Alexander’s forearm while going after a rebound.

Davis sat out the first two minutes of the third quarter but checked into the game with a protective wrap around his thumb and wrist.

He finished with 29 points, 18 rebounds and five assists. It wasn’t enough.

“We can’t fold. What do you want us to do?” said Carmelo Anthony, who scored 21 points for the Lakers. “This bit hurts — losing to the same team twice in the same week in the same fashion.”

All seemed well with the Lakers when Russell Westbrook’s 15-foot bank shot put them ahead, 44-25, with 5:27 to play in the second quarter. From there, the lead was slowly but surely whittled away.

“It is nervous time at Staples Center,” Lakers play-by-play announcer Bill Macdonald declared shortly before Kenrich Williams’ dunk gave Oklahoma City its first lead, 85-84, with 5:27 to play.

Anthony’s three-pointer brought the Lakers within 103-101 with 39.5 seconds left. After the Thunder missed a lay-up, Westbrook cruised down court but the ball slipped out of his grip as he attempted a driving cross-court pass to Avery Bradley with 21 seconds left.

Westbrook also missed a three-point shot with 3.5 seconds left that would have tied the score.

The Thunder played “faster than we did, simple as that,” said Westbrook, who had 27 points.

The Lakers fell to 5-4 in what was surely a soft part of their schedule. Their next game is in Portland, always a tough place for them to play. Then they return home for games against teams exceeding expectations so far — Charlotte, Miami and Minnesota.

In addition to James, the Lakers were without injured players Talen Horton-Tucker, Trevor Ariza and Kendrick Nunn.

“We haven’t had our full team one time. Not even close, actually,” Westbrook said. “We’ve just got to take whatever we have and make the best of it.”

Gilgeous-Alexander scored 28 points for the Thunder, including a ridiculously long 34-foot three-pointer with 1:18 left for a 101-95 lead.

“Shai did a good job of picking us apart,” Davis said. “He made us pay for trying to double-team him.”