Longtime mixed martial arts (MMA) trainer Robert Follis \u2014 who was one of the former head trainers at Xtreme Couture in Las Vegas, Nevada \u2014 passed away last night (Sat., Dec. 16, 2017). The official cause of death has not been made public at this time. Countless team-mates, fans, and friends swarmed social media to send their condolences after the shocking news surfaced. As per striking coach Dewey Cooper, who coaches several MMA stars such as Francis Ngannou, long-time Xtreme Couture coach Robert Follis has passed away. https:\/\/www.instagram.com\/p\/BczVPgxlc5m\/ Robert Follis served as a grappling coach at Xtreme Couture, the Las Vegas-based gym founded by former UFC heavyweight and light heavyweight champion Randy Couture. https:\/\/www.instagram.com\/p\/Bczrt7Wnqrj\/ https:\/\/twitter.com\/DanTomMMA\/status\/942430690234089473 https:\/\/twitter.com\/jimmysmithmma\/status\/942441259112701952 https:\/\/www.instagram.com\/p\/Bcz6O-6BCM9\/ The President of the UFC captioned his post: "Sucks to wake up and hear this news. RIP @robertfollis such a nice guy." https:\/\/twitter.com\/danawhite\/status\/942455767747256321 https:\/\/twitter.com\/kennyflorian\/status\/942419899044986880 The saddening news comes just weeks after the coach left his long-term job at Xtreme Couture. He parted ways with the Las Vegas gym in November to pursue fresh opportunities within the sport. The team of MMA Hits\u00a0would like to send their sincere thoughts and condolences to the Follis family.