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He was an Irish mixed martial arts fighter who competed in the featherweight, light weight and occasionally the Ultimate Fighting Championship (UFC) welterweight categories. He also fought in the discipline of boxing in the lightweight category
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He was born on July 14, 1988 in Dublin, Ireland
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On February 7, 2007, at age 18, McGregor made his amateur debut in mixed martial arts against Kieran Campbell for the Irish Ring of Truth promoter in Dublin. Won via technical knockout (TKO) in the first round
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His first defeat was against Lithuanian fighter Artemij Sitencov on June 28, 2008 in Dublin
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mc gregor holds the world record for the shortest fight in history winning jose aldo in only 13 seconds
