It’s an emotional day in the mixed martial arts world as we say goodbye to one of the UFC’s pioneers . The UFC is approaching its 31st anniversary in the business and throughout that time, the promotion has accumulated numerous stars. Fans are often sad to see their favorite fighters bow out of the sport, but the news of a former competitor passing away is much worse. Art Jimmerson was 60 years old when his death was announced to the world. Jimmerson was well known for competing at the inaugral UFC 1 event, where he sported a single boxing glove on his left hand–ultimately earning him the nickname ‘One Glove’