Mixed martial arts  fighter Conor McGregor exits after appearing at a Brooklyn court on charges of assault stemming from a melee, in the Brooklyn borough of New York City, US, April 6th, 2018. Photograph: Brendan McDermid/Reuters

Prior to his bout, an MMA fighter pally with Conor McGregor had a frisky altercation in a New York hotel with his slated opponent. Outraged by such un(...)