Jose Aldo and Conor McGregor Nearly Comes to Blows at Press Conference (Video) The bitter rivalry between featherweight champion Jose Aldo and interim titleholder Conor McGregor was front and center at the UFC’s “Go Big” press conference in Las Vegas on Friday as the fighters nearly came to blows. Check out the video footage. UFC president Dana White had to intervene. Follow MMAWeekly.com on Facebook , Twitter and Instagram .