Antonio Brown is finally addressing the bizarre incident that ended his Bucs career ... claiming the team gave him a "powerful and sometimes dangerous painkiller" and forced him to play despite knowing he had a serious ankle injury -- all leading to the moment he says head coach Bruce Arians told him "you're done!"
That's when 33-year-old AB says he removed his jersey and pads ... and walked off the Met Life football field.
"Because of my commitment to the game, I relented to pressure directly from my coach to play injured.