LOS ANGELES -- You don't have to dig too deep to realize Joseph Duffy gets under Conor McGregor's skin.
Duffy, who left mixed martial arts for three years, was signed to the UFC last year largely on his hype as the last man to defeat McGregor. On Oct. 24, in just his third UFC bout, Duffy will headline at Dublin's O2 Arena against Dustin Poirier in a lightweight bout, a main event which sold out in minutes.
But McGregor isn't too impressed.
"I think he's a journeyman," McGregor said at a recent media event in downtown Los Angeles.