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, 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.
Jones won his first UFC Light Heavyweight Championship in March 2011, becoming the youngest champion since the UFC instituted weight classes. He holds many UFC records in the light heavyweight division, including the most successful and consecutive title defenses, the most wins, the longest win streak and the most submission victories. Jones was considered by many to be the best pound-for-pound fighter in the world during the height of his championship reign.
Jones has never been defeated for a championship in MMA competition and many consider his lone professional loss, a disqualification against Matt Hamill, a bad referee decision. Jones first lost his status as UFC champion in 2015 when the UFC stripped his title and suspended him after he was arrested on felony hit-and-run charges. He returned to the UFC in 2016 to win the Interim UFC Light Heavyweight Championship against Ovince Saint Preux, but was stripped of the title after failing a United States Anti-Doping Agency (USADA) drug test just days before his scheduled UFC 200 bout against Daniel Cormier. He was suspended for a year after USADA ruled the positive test came from male enhancement pills, but still faulted Jones for negligence.
Jones returned on July 29, 2017, at UFC 214, and defeated Cormier via third-round KO to win his second UFC Light Heavyweight Championship. However, it was later revealed that Jones had failed another USADA drug test, and Jones was stripped of his third championship and his victory over Cormier was reversed to a 'no contest'. Because this was his second violation, Jones was facing a potential four-year ban, but this was reduced to fifteen months; thirty months were deducted due to Jones providing "substantial assistance" to USADA and a further three months were deducted because there was not enough evidence to show Jones was intentionally taking banned substances. Jones returned from suspension at UFC 232 where he defeated Alexander Gustafsson in a rematch to win the vacated UFC Light Heavyweight Championship, which he then defended against Anthony Smith.