Conor McGregor, Dustin Poirier vow to fight again amid ugly UFC rivalry Gotham Rex 3 years ago There will be a Round 4 between Conor McGregor and Dustin Poirier. Source: NY Post click here for more… Share: Floyd Mayweather posts $50K bet on Dustin Poirier beating Conor McGregorDateJuly 11, 2021In relation toNew York CityConor McGregor falls to Dustin Poirier again —and injures ankleDateJuly 11, 2021In relation toNew York CityConor McGregor sends Dustin Poirier creepy voice message on TwitterDateJuly 6, 2021In relation toNew York City