Early career Jones made his professional MMA debut in April 2008. In his second UFC match, Jones took on veteran
Stephan Bonnar at
UFC 94 on January 31, 2009. Jones won the fight by unanimous decision. Jones's third fight was against
Jake O'Brien at
UFC 100 on July 11, 2009. Jones won via submission. In September 2009, Jones was rewarded for his victories by signing a new, four-fight contract with the UFC. On December 5, 2009, Jones fought fellow
light heavyweight prospect
Matt Hamill at
The Ultimate Fighter: Heavyweights Finale. Jones used his wrestling to dominate Hamill, but was disqualified for the use of illegal
12–6 elbows. The
Unified Rules of Mixed Martial Arts prohibited downward elbow strikes, and Jones was initially only penalized a point from the round. However, Hamill was unable to continue due to his dislocated shoulder. Consequently, the replay simulation was reviewed, and showed that Jones's elbows further damaged Hamill's already bloody and lacerated nose. This marked the first time that Nevada had used its recently enacted instant replay rule, in which the referee's decision was supported by the commission, which utilized a slow-motion replay to review the elbows. UFC president
Dana White was aggrieved that referee Steve Mazagatti ruled the bout as a
disqualification, which resulted in a loss for Jones, saying that it should have been a
no contest. In 2019, White said he was still attempting to have the result overturned to a no contest by the
Nevada State Athletic Commission. Jones fought
Brandon Vera on March 21, 2010, at
UFC Live: Vera vs. Jones. Jones won the fight by TKO. The elbow delivered to stop the fight also broke Vera's face in three places. Jones also won the "Knockout of the Night" award. in 2010 Jones defeated former
IFL Light Heavyweight Champion
Vladimir Matyushenko by TKO with elbows in 1:52 of the first round on August 1, 2010, at
UFC Live: Jones vs. Matyushenko. Dana White promised Jones a "huge step-up in the competition", if he managed to defeat Matyushenko. Following the match with Matyushenko, White said, "Vladimir Matyushenko is a guy who I have a lot of respect for and I didn't think it was going to happen that easy. Jones is the real deal and he just catapulted himself tonight into the top eight in the world. Tonight solidified it. ... He's got to keep his head together, stay focused and keep doing all the right things in training. He's smart, good looking and bad-ass. He's going to make a lot of money—this kid is going to do very well." After defeating Matyushenko, Jones stated that he wanted a "top-three opponent" for his next fight. Jones mentioned in an interview with
Inside MMA that he would be facing the winner of
Antônio Rogério Nogueira vs.
Ryan Bader. Reports that Jones had previously been offered a match with Nogueira, but turned it down, turned out to be false. In the
Inside MMA interview, Jones also stated that he had been informed by Dana White and
Lorenzo Fertitta that if he finished his next two fights, he would likely receive a title shot. Jones handed Bader his first professional loss by defeating him via submission due to a
guillotine choke in the second round after dominating Bader in the first round. Jones was awarded the "Submission of the Night" bonus.
Light Heavyweight Champion Immediately after the bout with Bader, it was revealed that title contender and Jones's training partner
Rashad Evans had sustained a knee injury in training, and would not be able to compete in his scheduled match with UFC light heavyweight champion
Maurício "Shogun" Rua. Jones was told by
Joe Rogan in the post-fight interview that he would replace Evans in the fight for the
UFC Light Heavyweight Championship. On March 19, 2011, at
UFC 128, Jones defeated Rua by TKO at 2:37 of Round 3, becoming the youngest ever UFC champion. After an early flying knee that badly hurt the champion, Shogun was dominated throughout the three rounds. A body shot and knee to the head dropped the champion to his knees, causing the referee to step in and halt the match. Jones's first title defense was expected to be on August 6, 2011, at
UFC 133 against
Rashad Evans, his former friend and teammate, but Jones was sidelined with a hand injury. It was initially announced that the hand injury would require surgery, but Jones opted for rest and rehabilitation without surgery after further consultations with doctors. Jones's injury was originally thought to keep him out of action until late 2011, but he instead made his first title defense against
Quinton Jackson on September 24, 2011, at
UFC 135. Jones defeated Jackson via
rear naked choke submission at 1:14 in the 4th round. In the process, he became the first UFC fighter to submit Jackson. In 2012, Jones said that this was his favorite fight up to that point. Jones vs. Evans was in the works for a second time, and a bout was targeted for December 10, 2011, at
UFC 140. However, a lingering thumb injury cost another title opportunity for Evans, and Jones instead faced
Lyoto Machida at the same event. Jones successfully defended the light heavyweight title at UFC 140, stopping Machida at 4:26 of the second round via
guillotine choke technical submission. This was the first submission loss in Machida's career. Jones faced his arch rival and former teammate
Rashad Evans on April 21, 2012, at
UFC 145, and won via unanimous decision (49–46, 49–46, and 50–45). During the UFC 145 post fight press conference,
Dana White confirmed that Jones's next opponent would be
Dan Henderson. The Jones-Henderson fight was expected to take place at
UFC 151, but Henderson pulled out of the bout due to injuries. Jones then refused a late replacement fight with
Chael Sonnen after his coach Greg Jackson told him with three training days left, it would be difficult to prepare. UFC 151 was then subsequently canceled, the first cancelation in the company's 19-year history. Jones's decision to decline the fight against Sonnen was criticized by UFC president Dana White, who said, "This is one of the most selfish, disgusting decisions that doesn't just affect you. This is affecting 16 other lives, their families, kids are going back to school. The list goes on and on of all the things, the money that was spent for fighters to train and the list goes on and on. Like I said, I don't think this is going to make Jon Jones popular with the fans, sponsors, cable distributors, television network executives or other fighters." However, Jones was defended by MMA analysts, who criticized White for promoting a thin card. It was later reported that Henderson was injured three weeks prior to the announcement, but kept the injury under wraps as he was still hoping to compete. A rematch with
Lyoto Machida was then announced for September 22, 2012, at
UFC 152. Lyoto Machida, who was not contacted prior to the announcement, rejected the fight due to the lack of time to train before the bout. Jones, instead, defended the championship against
Vitor Belfort on September 22, 2012, at
UFC 152. Despite almost being submitted via
armbar in round one, Jones successfully defended the belt against Belfort via
Americana submission in round four, and equaled
Chuck Liddell's number of title defenses. Jones also won a $65,000
Submission of the Night bonus for his finish of Belfort. Jones was chosen to coach opposite
Chael Sonnen on
Season 17 of the Ultimate Fighter. With a bout between the coaches taking place on April 27, 2013, at
UFC 159. Jones displayed a lack of interest in the bout and actively downplayed the contest, making it clear that he did not believe Sonnen was a fit contender. In an interview, Sonnen did his best to garner interest in the bout, but Jones gave him the "
silent treatment", and refused to make eye contact. Jones made quick work of his challenger, finishing Sonnen via TKO in the first round. However, he broke the
phalanx (big toe) on his left foot during the fight. With the win, Jones tied
Tito Ortiz for having most consecutive title defenses in UFC light heavyweight history. Jones faced
Alexander Gustafsson on September 21, 2013, at
UFC 165. Jones was badly cut above the eye during the first round, but he won the back-and-forth fight via unanimous decision (48–47, 48–47, and 49–46). After the match, Jones said Gustafsson gave him the toughest fight of his career, and both were sent to the hospital for their injuries. Both men suffered lacerations and facial swelling, but were released from the hospital with no broken bones or serious injuries. The bout earned both fighters the
Fight of the Night bonus award. The match received numerous positive reviews: "an epic battle", "instant-classic", "Fight of the Year", "Greatest light heavyweight title fight of all-time", "one of the greatest fights in UFC history". On March 8, 2020, it was announced that the fight will be inducted to UFC Hall of Fame's Fight Wing on July 9. Jones was expected to take on
Glover Teixeira on February 1, 2014, at
UFC 169. However, on October 7, UFC President Dana White stated that the announcement for this fight on that card was premature and that Jones and Teixeira would face each other on a different card. On November 13, 2013, it was announced that Jones would fight Teixeira at
UFC 170, scheduled for February 22, 2014; however, the next day it was announced that the match had been removed from the card. On December 4, 2013, it was announced that Jones and Teixeira would face each other at
UFC 171 on March 15, 2014, in
Dallas, Texas; however, the fight was moved again. Jones and Teixeira finally fought on April 26, 2014, at
UFC 172. Jones won the bout via unanimous decision (50–45, 50–45, and 50–45). On April 27, 2014, UFC President
Dana White confirmed that Jones would next have a rematch against Gustafsson, and stated the possibility of the match taking place in a stadium in Sweden on pay-per-view. On May 24, 2014, it was indicated that the rematch would take place in
Las Vegas on August 30, 2014, at
UFC 177. The statement, and the time and venue, was not official, however, because Gustafsson was the only one who still had agreed to accept the match. On June 2, the fight was still on hold, and White explained the situation as "Jones doesn't want to fight Gustafsson", and instead expressed his preference for fighting
Daniel Cormier. On June 5, 2014, the UFC confirmed that the Jones vs. Gustafsson rematch would take place on September 27, 2014, at
UFC 178. However, Gustafsson had to pull out of the match due to a torn meniscus. Jones was then expected to take on replacement
Daniel Cormier at
UFC 178. On August 12, 2014, it was announced that Jones had sustained a leg injury in training, causing him to withdraw. The bout was rescheduled, and eventually took place on January 3, 2015, at
UFC 182. Jones won the fight by unanimous decision (49–46, 49–46, and 49–46). He also became the first person to take Cormier down, scoring three takedowns in total. The win also earned Jones his fourth
Fight of the Night bonus award. It was later revealed that Jones had failed a drug test one month prior to the event, as he tested positive for
cocaine. (see below in #Controversies)
First suspension and return Jones was expected to defend his title against
Anthony Johnson on May 23, 2015, at
UFC 187. However, on April 28, Jones was stripped of the belt and suspended from the UFC indefinitely in connection with a
hit-and-run incident where he crashed into a pregnant woman then fled the scene on foot. Cormier, who lost against Jones at UFC 182 in January 2015, replaced him and went on to defeat Anthony Johnson to take the vacant UFC Light Heavyweight Championship. On October 23, 2015, the UFC announced that Jones had been reinstated to the active roster, nearly six months after his suspension was announced. A rematch with Cormier was expected to take place on April 23, 2016, at
UFC 197. However, Cormier pulled out of the fight on April 1, citing a foot injury, and was replaced by
Ovince Saint Preux. Jones defeated Saint Preux by unanimous decision (50–44, 50–45, and 50–45).
Second suspension and return The rematch with Cormier was rescheduled and expected to take place on July 9, 2016, at
UFC 200. However, on July 6, 2016, Jones was removed from the bout by USADA on June 16 after a potential doping violation. On November 7, 2016, it was announced that Jones had been suspended for one year by USADA, retroactive to July 7. Two days later, it was announced that Jones had been stripped of his interim title, making him the first fighter in UFC history to be stripped of a title twice. On December 15, Jones was also suspended by the
Nevada State Athletic Commission (NSAC) for one year. While on the sidelines, Jones fought retired MMA veteran
Dan Henderson in a grappling match for the Submission Underground 2 tournament on December 10, 2016. After an even start, Jones eventually submitted Henderson with an arm-triangle choke six minutes into the bout. Following the fight, Jones expressed interest in competing against
Chael Sonnen.
Third suspension and return The rematch with
Daniel Cormier took place on July 29, 2017, at
UFC 214 at the
Honda Center in
Anaheim,
California. Jones won the fight and re-captured the UFC Light Heavyweight Championship via knockout in the third round. After the fight, Jones was awarded a
Performance of the Night bonus. After the fight, Jones praised Cormier as a "model champion", while recognizing his own personal failings. He then challenged
Brock Lesnar to a fight. On August 22, it was announced that Jones had been flagged for a potential doping violation by
USADA, stemming from his sample that was collected after weigh-ins July 28. He tested positive for
Turinabol, an
anabolic steroid. Jones was placed on a provisional suspension as a result. As a result, the California State Athletic Commission (CSAC) officially overturned the result of the fight to a
no contest. Subsequently, UFC President Dana White made the decision to strip him of the Light Heavyweight championship, and return it to Daniel Cormier. In September 2018, it was announced by USADA that Jones would serve a suspension of 15 months. From a potential suspension of 48 months USADA applied a reduction of 30 months for Jones's co-operation in identifying other anti-doping offences, and a further 3 months was applied by arbitrators McLaren in relation to Jones's degree of fault.
Second UFC Light Heavyweight Championship reign On October 10, 2018, it was announced that Jones would return at
UFC 232 on December 29, 2018, in a rematch with
Alexander Gustafsson for the vacant
UFC Light Heavyweight Championship. Jones defeated Gustafsson by technical knockout in the third round to win the UFC Light Heavyweight Championship. In the first defense of his second championship reign, Jones faced
Anthony Smith on March 2, 2019, in the main event at
UFC 235. Jones dominated the fight, but was deducted two points in the fourth round after landing an illegal knee to Smith's head. He won the fight via unanimous decision with 48–44 on all three judges' scorecards. Jones faced
Thiago Santos on July 6, 2019, in the main event at
UFC 239. He won the back-and-forth match via split decision (48–47, 47–48, and 48–47), defending his title for the second time. Jones won the fight via controversial unanimous decision (48–47, 48–47, and 49–46). Of the 21 media scorecards tracked by MMAdecisions.com, 14 scored the contest for Reyes, while seven favored Jones. With this win, Jones set the new record for most wins in UFC title fight history with 14 wins.
Disagreement with the UFC and move to heavyweight After conflict with UFC President
Dana White over pay in May 2020, Jones said he had vacated the
UFC Light Heavyweight Championship. He won the bout and earned the title via a
guillotine choke submission in the first round. After the fight, Jones earned the
Performance of the Night bonus award. Jones was scheduled to defend his title against former two-time heavyweight champion
Stipe Miocic on November 11, 2023, at
UFC 295. However, Jones was forced to pull out due to injury after tearing a pectoral tendon. As a result, a bout for the interim UFC Heavyweight Championship between Sergei Pavlovich and
Tom Aspinall was scheduled for the event. Aspinall won via first-round knockout to become the interim champion. One year after his injury, the bout between Jones and Miocic was rescheduled to November 16, 2024, at
UFC 309. He won the fight by technical knockout via a spinning back kick followed by punches in the third round. With this twelfth title defense, Jones broke the record for most title defenses in UFC history. Jones became the promotion's longest-tenured fighter.
Retirement Following his title defense against Miocic, Jones expressed disinterest in fighting interim
UFC Heavyweight Champion Tom Aspinall, instead calling out then
UFC Light Heavyweight Champion Alex Pereira for a superfight. At the post-fight press conference of
UFC on ABC: Hill vs. Rountree Jr. on June 21, 2025,
Dana White announced that Jones had retired from mixed martial arts competition and that Aspinall was the new undisputed champion as a result. On July 4, 2025, the day after
UFC White House was announced, Jones said he re-entered the testing pool and is listed as active on the official UFC website. On March 9, 2026, after the White House card was announced and Jones was not on it, he requested his release from the UFC.
MMA coach Jones has trained
2020 Olympic gold medalist Gable Steveson since Steveson's transition to
mixed martial arts in 2025. Steveson decided to pursue MMA after assisting Jones during preparations for his November 2024 UFC heavyweight title defense against
Stipe Miocic. Jones has also helped train and mentor several other high-profile fighters. He worked extensively with
Holly Holm prior to her knockout victory over
Ronda Rousey at
UFC 193, which earned her the
UFC Bantamweight Championship. He also assisted former UFC Heavyweight Champion
Andrei Arlovski in his preparation for
UFC 187, which Arlovski won by TKO over
Travis Browne. Jones previously served as a head coach opposite
Chael Sonnen on
The Ultimate Fighter: Team Jones vs. Team Sonnen in 2013. He later coached on
ALF Reality, a Russian reality fighting series, appearing in its second season in 2025 opposite
Jorge Masvidal and its third season in 2026 opposite
Daniel Cormier. ==Grappling career==