LeBron James did not suit up for the Lakers' season opener -- the first time he's missed a Game 1 in his NBA career ... and his good buddy Draymond Green couldn't help but roast his "old ass" for the absence.
The four-time NBA champ was out as L.A. hosted the Golden State Warriors at Crypto.com Arena Tuesday night ... marking the first time in 23 years the NBA tipped off without the King.
While fans were sad to see James in street clothes on the bench due to his injury, Green saw it as a perfect chance to clown his rival .