McGregor retires from MMA

TIMOTHY A. CLARY / AFP

Conor McGregor has retired from the Mixed Martial Arts (MMA).

The former UFC featherweight and lightweight champion made the announcement on Twitter.

In 2015, the Irishman defeated Jose Aldo to win the UFC Featherweight Championship via a knockout thirteen seconds into the first round.

It is still the fastest victory in UFC title fight history. 

 

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