Jonathan Dwight Jones (born July 19, 1987) is an American professional mixed martial artist who is currently signed with the Ultimate Fighting Championship (UFC). He is the current and two-time undisputed UFC Light Heavyweight Champion. Jones also held the interim UFC Light Heavyweight Championship once, thus making him a three-time UFC champion overall. Jones is also the youngest champion in UFC history, winning his first UFC world championship at age 23. Jones is widely regarded as one of the greatest professional fighters of all-time. As of January 2, 2019[update], he is #2 in official UFC pound-for-pound rankings. Jones is the younger brother of former National Football League (NFL) player Arthur Jones and the older brother of current NFL player Chandler Jones.