Jan 23, 2021; Abu Dhabi, United Arab Emirates; Dustin Poirier punches Conor McGregor of Ireland in a lightweight fight during the UFC 257 event inside Etihad Arena on UFC Fight Island. Mandatory Credit: Jeff Bottari/Handout Photo via USA TODAY Sports

Dustin Poirier stuns Conor McGregor in 2nd round at UFC 257

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UFC 257

January 18, 2020; Las Vegas, Nevada, USA; Conor McGregor reacts during UFC 246 at T-Mobile Arena. Mandatory Credit: Mark J. Rebilas-USA TODAY Sports

UFC

Conor McGregor odds-on favorite vs. Dustin Poirier

January 18, 2020; Las Vegas, Nevada, USA; Conor McGregor reacts during UFC 246 at T-Mobile Arena. Mandatory Credit: Mark J. Rebilas-USA TODAY Sports

UFC

Conor McGregor UFC 257: Facing his most brutal competition