The end is near for Paul Pierce ... so says the Brooklyn Nets superstar himself who tells TMZ Sports he's only got 1 or 2 years left before his NBA run is over.
Pierce was out in Calabasas this morning picking up a few cases of water -- and explained that he was trying to stay hydrated after a killer morning workout.
When asked why he was already puttin' in work ... even though the season JUST ended ... Pierce dropped this nugget on us:
"It's a long grind. It's a long grind dawg ... I only got 1 or 2 years left in me."
For the record, Pierce is only 36-years-old ... and even though this past season wasn't his best ... he's still a force to be reckoned with ... and could continue to be as long as his knees hold up.