LeBron James began the final game of his 20th NBA season with the highest-scoring postseason half of his matchless NBA career.

He ended the night by questioning how much longer he plans to chase history after his Los Angeles Lakers were swept out of the Western Conference finals.

James set a personal record with 31 points in the first half of Game 4 on Monday night, but he missed two potential tying shots in the final minute as the Denver Nuggets ended the Lakers’ season with a 113-111 victory.

The 38-year-old James finished with 40 points, 10 rebounds, nine assists and immense frustration after Los Angeles’ remarkable late-season surge ended with four consecutive defeats. Although the top scorer in NBA history spoke about himself as part of the Lakers next season, James also said he hasn’t made up his mind.

“We’ll see what happens going forward,” James said in the final answer of his postgame news conference. “I don’t know. I don’t know. I’ve got a lot to think about, to be honest. Just for me personally going forward with the game of basketball, I’ve got a lot to think about.”

James is under contract for $46.9 million next season with the Lakers, but he is in charge of his future after surpassing Kareem Abdul-Jabbar’s career scoring record earlier this year. He hasn’t previously suggested much personal conflict about finishing his contract alongside Anthony Davis, and his play hasn’t significantly declined after two decades in the NBA — although his health has grown less sturdy, particularly in his balky feet and ankles.