How To Watch UFC 246 Live Stream Online WATCH UFC 246 LIVE STREAM A welterweight bout between former two-division champion Conor McGregor and former UFC Lightweight Championship challenger Donald Cerrone is expected to serve as the event headliner. This time It will be just McGregor’s third fight at welterweight. He fought Nate Diaz twice at the weight class in 2016, splitting the series. He also hasn’t fought since 2018 at UFC 229, when he was submitted by Khabib Nurmagomedov in a lightweight title fight. That fight became infamous for what happened after the match when fights broke about between the two fighters’ camps. McGregor was ultimately suspended six months for his part in the ordeal, while Nurmagomedov was banned for nine months.