Dustin Poirier punches Conor McGregor of Ireland in a lightweight fight during the UFC 257 event inside Etihad Arena on UFC Fight Island on January 24, 2021 in Abu Dhabi, United Arab Emirates. (CNN)American mixed martial arts fighter Dustin Poirier defeated Conor McGregor early Sunday in a much-anticipated Ultimate Fighting Championship re-match that left McGregor …
