D.U.S.T. Commander Dale Brown says several MMA fighters have hit him up since cornering Joaquin Buckley to a win last weekend -- but unfortunately for those other fighters, the deadly self-defense expert tells TMZ Sports he's only rockin' with JB!!
We broke the news last week ... Buckley (14-4, 10 KOs) hit up Brown, a viral sensation, to be one of his cornermen for his matchup against Abdul Razak Alhassan at UFC Fight Night in Vegas.
Buckley won by decision ... and Commander Brown says Buckley utilized some of his moves during the tightly contested fight.