Conor McGregor announces retirement from UFC via Twitter The 31-year-old has threatened to retire twice in the past, only to return shortly thereafter McGregor says his enthusiasm for the sport has declined, and he is frustrated with the scheduling process Is Conor McGregor's fighting career over? If his social media post from late Saturday night is true, we may have seen the end of McGregor in the Octagon: https://twitter.com/TheNoto... Read More