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Conor McGregor looks unrecognisable in MMA debut footage from 14 years ago
Conor McGregor has worked his way up from apprentice plumber to become one of the most recognisable sporting stars on the planet - and his physical appearance has changed along the way.Before turning professional, McGregor tested himself in mixed martial arts for the first time in an amateur bout against Kieran Campbell at the age of 18 back in 2007.The Irishman overwhelmed his opponent with a flurry of kicks and punches to win by technical knockout in the first round as his lucrative MMA career launched.Fighting under the Irish Ring of Truth promotion in Dublin, the bout would provide the platform for McGregor to progress, and he begun training at the Straight Blast Gym under John Kavanagh the following year.Back in 2020, McGregor commented on the bout on social media, saying it was when he knew he was on the correct path.He wrote: "McGregor vs Campbell. It was only right that my debut mixed martial arts fight was against a Campbell.