Arguably the greatest fighter in UFC history, Jon Jones' near-perfect professional record in the world's premier MMA promotion is truly a rare feat.The only blemish on his record is a disqualification loss to Matt Hamill back in 2009, a fight he was dominating before the referee controversially intervened. UFC president Dana White has fought tooth and nail to have that result overturned to a no contest, but to no avail.MMA On Point@OnPointMMAThe only recorded "loss" on Jon Jones record.214858The only recorded "loss" on Jon Jones record. https://t.co/DUsgpIgCSM'Bones' if effectively unbeaten inside the octagon. While his legal troubles outside the cage have dented his reputation, there's no denying that he's one of the best fighters ever. However, he's run into adversity on quite a few occasions throughout his career, some of which have been discussed below.Here are five times Jon Jones almost lost a fight in the UFC light heavyweight division.#5. Jon Jones vs. Lyoto Machida – UFC 140Following his much-maligned disqualification loss to Matt Hamill, Jon Jones racked up three quick finishes to earn a title shot. He defeated Mauricio Rua to claim the light heavyweight championship in 2011 and in his second title defense, squared off against striking phenom Lyoto Machida.Machida was fresh off a sensational knockout win over Randy Couture, with many hailing the Brazilian as one of the best strikers in the sport. 'The Dragon' showcased his slick stand-up in the first round against Jones, catching the then-champion with one blitz after another.Ocelot MMA@Ocelot_MMADecember 10, 2011 UFC 140 Jon struggled early with the blitzes of Lyoto Machida In Round 2, he imposed himself upon the Dragon. Pulled off one of the Coldest Finishes in UFC History1163107December 10, 2011 UFC 140 Jon struggled early with the blitzes of Lyoto Machida In Round 2, he imposed himself upon the Dragon. Pulled off one of the Coldest Finishes in UFC History https://t.co/TKQrVOBg9AAt the time, Lyoto Machida had knockout wins over the likes of Stephan Bonnar, Rich Franklin, Thiago Silva and Rashad Evans on his record, in addition to the win over Randy Couture. The former champion's speed and power were on full display in the opening five minutes against Jon Jones, as he caught the young American multiple times flush on the chin.However, one of the most underrated factors behind Jones' success and longevity is his chin. 'Bones' absorbed Machida's onslaught in the first frame and came out with a vengeance in the second, dropping 'The Dragon' before pulling off one of the most brutal submissions we've ever seen.MMA History Today@MMAHistoryTodayDec10.201110 years ago today,Jon Jones choked Lyoto Machida to unconsciousness.2598256Dec10.201110 years ago today,Jon Jones choked Lyoto Machida to unconsciousness. https://t.co/Eib7D6NQwQ#4. Jon Jones vs. Alexander Gustafsson 1 – UFC 165Going into UFC 165 in Toronto, Canada, Jon Jones was being touted as the best pound-for-pound fighter on the planet. Fresh off stoppage victories over Vitor Belfort and Chael Sonnen, Jones was a massive betting favorite heading into his fifth title defense against Alexander Gustafsson.The bout that ensued turned out to be arguably the toughest fight of Jones' career.UFC on BT Sport@btsportufcOne of the best title fights of all time!Extended highlights of Jon Jones and Alexander Gustafsson incredible first fight at UFC 165 Eight years ago #OnThisDay!1074169One of the best title fights of all time!Extended highlights of Jon Jones and Alexander Gustafsson incredible first fight at UFC 165 👊Eight years ago #OnThisDay! https://t.co/JTYC8IRSYrLargely counted out before the fight, Alexander Gustafsson showed tremendous heart and grit to push the then-champion to the absolute limit. His high-output boxing and evasive movement was proving to be difficult for Jon Jones to deal with in the first few frames, and the fight was razor-close heading into the championship rounds.Jones pulled ahead in the final two rounds, but Gustafsson's early success meant that nobody was quite sure which way the judges would lean after the fight. Ultimately, 'Bones' came away with a narrow decision win, with the final scorecards reading 48-47, 48-47 and 49-46 in favor of the champion.Jones was definitely outclassed in the first two rounds and even got taken down by the challenger. If Gustafsson had the cardio to win at least one more round decisively, he would've pulled off one of the biggest upsets in UFC history.ESPN MMA@espnmmaJon Jones and Alexander Gustafsson pushed each other to the brink eight years ago today at UFC 165.In two days, their instant classic bout will be inducted into the UFC Hall of Fame.5968605Jon Jones and Alexander Gustafsson pushed each other to the brink eight years ago today at UFC 165.In two days, their instant classic bout will be inducted into the UFC Hall of Fame. https://t.co/OAcauyxine#3. Jon Jones vs. Dominick Reyes – UFC 247While Jon Jones' title defense against Alexander Gustafsson was a closely contested affair, there weren't too many claims in the immediate aftermath that the challenger deserved the judges' nod.His fight against Dominick Reyes, on the other hand, remains a huge topic of conversation to this day. Reyes was Jones' last opponent in the light heavyweight division and should've come away with a victory in the eyes of many.Ocelot MMA@Ocelot_MMAFebruary 8, 2020UFC 247 Jon defeats Dominick Reyes via UD. A very close fight, strong case for Jon losing. Another baffling performance in which Jon appeared much more limited than he had in the past.2395February 8, 2020UFC 247 Jon defeats Dominick Reyes via UD. A very close fight, strong case for Jon losing. Another baffling performance in which Jon appeared much more limited than he had in the past. https://t.co/ft33FyrkCkJon Jones and Dominick Reyes locked horns in the main event of UFC 247 back in 2020, with the champion looking to claim his record 11th title defense. Reyes held a perfect 12-0 record at the time and was known for his powerful striking, making him an intriguing challenger for 'Bones'.On the night, it felt as though Reyes edged out the first three rounds as he landed the bigger blows over the first 15 minutes. Jones came on strong in the championship rounds as the challenger showed signs of fatigue, and when the final bell rang, many believed Jones was about to suffer the first legitimate loss of his career.However, the final scorecard was identical to the Alexander Gustafsson fight, with one judge somewhat surprisingly scoring the bout 49-46 in favor of Jones. The MMA community erupted soon after the bout as the majority felt as though 'The Devastator' did enough to dethrone the champion.ESPN MMA@espnmmaOne #UFC247 scorecard in particular left @DomReyes feeling disrespected.3290438One #UFC247 scorecard in particular left @DomReyes feeling disrespected. https://t.co/09iJ2wnGUr#2. Jon Jones vs. Anthony Smith – UFC 235Jon Jones' title defenses against Alexander Gustafsson and Dominick Reyes were both razor-close. This next entry, however, was far from competitive, yet somehow, Jones almost got disqualified for the second time in his career.En route to a comfortable defense of his 205-pound strap against Anthony Smith, Jones landed an illegal knee in the penultimate round of the bout which could've seen him lose his belt.Ocelot MMA@Ocelot_MMAMarch 2, 2019 UFC 235 Jon defends the belt against Anthony Smith Complete Domination, Jon essentially plays with his food as Smith gives little resistance. Nearly DQs himself again in Round 42174March 2, 2019 UFC 235 Jon defends the belt against Anthony Smith Complete Domination, Jon essentially plays with his food as Smith gives little resistance. Nearly DQs himself again in Round 4 https://t.co/wlbd1YIYfhJon Jones was clearly ahead on the scorecards heading into the fourth frame. The reigning champion had essentially nullified Smith's entire attacking arsenal over the first 15 minutes and was seemingly cruising towards another title defense.For whatever reason, Jones landed a blatant illegal knee on Smith while the challenger was grounded. The referee stopped the clock and gave 'Lionheart' time to recover. If he had claimed that he couldn't continue beyond that point, he would've been crowned the new champion via DQ to Jones.However, that is not the cloth from which Smith is cut. He opted to continue fighting and went on to lose via unanimous decision, despite Jones being docked two points for the illegal blow. While it would've been a smarter move from a financial point of view to stay down, Smith was applauded for fighting on.UFC@ufc"I wanted to finish the fight."@JonnyBones reflects on #UFC235 backstage 1429192"I wanted to finish the fight."@JonnyBones reflects on #UFC235 backstage ⤵️ https://t.co/00qd7Pqmjj#1. Jon Jones vs. Vitor Belfort – UFC 152Apart from a good opening round from Lyoto Machida, close fights with Alexander Gustafsson and Dominick Reyes, and an ill-advised illegal strike against Anthony Smith, there has only been one occasion where Jon Jones was in serious trouble during his UFC light heavyweight run.While all the aforementioned bouts were certainly precarious, only Vitor Belfort has come close to truly finishing 'Bones'.Sherdog@sherdogdotcom10 years ago today, Jon Jones got caught in this 𝖆𝖗𝖒𝖇𝖆𝖗 𝖆𝖙𝖙𝖊𝖒𝖕𝖙 by Vitor Belfort at UFC 15257810 years ago today, Jon Jones got caught in this 𝖆𝖗𝖒𝖇𝖆𝖗 𝖆𝖙𝖙𝖊𝖒𝖕𝖙 by Vitor Belfort at UFC 152https://t.co/4NpQj1noCwIn one of the most entertaining fights of Jon Jones' career, he took on Brazilian icon and MMA veteran Vitor Belfort at UFC 152. At the time, Belfort was considered among the most explosive fighters in the world with potent fight-ending ability, be it through strikes or submissions.In the very first round of their championship bout, Belfort locked up an armbar against Jones and came very close to finishing the submission. The champion's toughness was there for all to see as he lifted the Brazilian challenger off the mat and slammed him to break free.Jones ultimately submitted Belfort in the fourth round, putting him in a crucifix before forcing the tap with a keylock to retain his title.Jon 'Bones' Jones submits Vitor Belfort at UFC 152 [Image via @SquintsCollects on Twitter]