The Nuggets didn't just eliminate the Lakers from the postseason on Monday night -- they may have ended LeBron James' career too ... 'cause the L.A. superstar said after the Game 4 loss he's now seriously considering retirement.
A somber James met with reporters after Denver completed its sweep of the Lakers in the Western Conference Finals ... and after fielding questions for about a dozen minutes, 'Bron made it clear, he might not be back for the 2023-24 season.
"We'll see what happens going forward," James said to a throng of media members following the 113-111 defeat.