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November 21, 2018 5:00 AMBefore his grudge match with Nate Diaz at the UFC 202 pay-per-view event in August 2016, mixed martial arts (MMA) superstar Conor McGregor coughed up US$300,000 (S$410,000) to create a training facility in Las Vegas from scratch to get in fighting shape for the bout at the T-Mobile Arena.