Dustin Poirier has knocked out Conor McGregor in the second round at the UFC 257 Main Event. This spoils McGregor's long-awaited UFC return after his win over Donald "Cowboy" Cerrone last January. Poirier hinted after the match that he would be open to another bout against McGregor, as this fight brings their rivalry to a 1-1 record. The impressive wins of Poirier and Michael Chandler on Saturday night set the UFC's lightweight division up for a very exciting future.