Wearing his new brown belt, Conor McGregor raises his arm after scoring a first round TKO of Du …

Wearing his new brown belt, Conor McGregor raises his arm after scoring a first round TKO of Du ...

Wearing his new brown belt, Conor McGregor raises his arm after scoring a first round TKO of Dustin Poirier at UFC 178 Saturday, Sept. 27, 2014 at the MGM Grand Garden Arena in Las Vegas. (Sam Morris/Las Vegas Review-Journal)