Bad news for those hoping Dustin Poirier has one more fight in him after this weekend ... he tells TMZ Sports he's REALLY hanging up the gloves for good Saturday night.
We chopped it up with the 36-year-old ahead of his retirement match against Max Holloway in his home state of Louisiana. Before we got to that, we had to ask him if next year's potential July 4th card at the White House had him rethinking things.
Launch Gallery Launch Gallery GettyBut Diamond made it clear .