Following Conor McGregor's 40-second TKO win at UFC 246, his former opponent Nate Diaz tweeted, "Weak as f*ck" and "This sh*ts all fake". Making his octagon return after 15 months out of action, McGregor beat Donald 'Cowboy' Cerrone inside the first minute of their welterweight main event at T-Mobile Arena in Las Vegas.