DUBLIN – How profoundly poignant it was that, at the launch of a book entitled “Win or Learn,” Conor McGregor and John Kavanagh consistently, and often without prompting, made somber reference to the most devastating defeat of their decade-long partnership. Almost four months have passed since Nate Diaz (19-10 MMA, 14-8 UFC) ruthlessly strangled McGregor (19-3 MMA, 7-1 UFC) into submission at UFC 196. In the dying embers of the second round of the main event bout at Las Vegas’ MGM Grand Garden Arena, Diaz locked in the rear-naked choke heard ’round the world , and the UFC featherweight champion was compelled to contemplate a loss for the first time in close to six years
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