Conor McGregor vs Dustin Poirier Is Official For Jan. 23

Conor McGregor masked his returned to UFC after retiring earlier this year. He will fight Dustin Poirier January 23 in the main event of UFC 257. They will fight at 155 if this will be a rematch as Poirier seeks revenge after his first round TKO from 2014. 

Vegas odds have Conor favorite at -225 with Dustin an underdog at +185.