Justin Gaethje Vows To Get Revenge Against Dustin Poirier Image Credit: Esther Lin, MMA Fighting Justin Gaethje has no intentions of leaving the UFC without getting retribution for his loss to Dustin Poirier three years ago. Justin Gaethje has had a stellar UFC run thus far. Since jumping over from the World Series of Fighting in 2017, he has truly lived up to his nickname of turning in one highlight after another, racking up a performance bonus in every single fight up until his loss to Khabib Nurmagomedov at UFC 254. The loss to Nurmagomedov surely burns a competitor of Gaethje’s degree, but there is another opponent whom he is adamant about facing again: victor of last Saturday’s UFC 257 main event Dustin “The Diamond” Poirier.