Jonathan Dwight Jones (born July 19, 1987) is an American former professional mixed martial artist who competed from 2008 to 2025. During his career with the Ultimate Fighting Championship (UFC), he was the Light Heavyweight Champion from 2011 to 2015 and from 2018 to 2020, and the Heavyweight Champion from 2023 to 2025, as well as the interim Light Heavyweight Champion in 2016. He is regarded as one of the greatest mixed martial artists of all time. Jones became the youngest champion in UFC history with his light heavyweight title victory over Maurício Rua at age 23. He holds many UFC records in the light heavyweight division, including the most title defenses, most wins, and longest win streak. During much of his championship reign, Jones was widely considered to be the best pound-for-pound fighter in the world and spent a record 1,743 days as the UFC's #1 pound-for-pound fighter. Never stopped nor outscored during his career, Jones's only professional loss is a controversial disqualification against Matt Hamill; a result disputed by Hamill and UFC president Dana White. Between 2015 and 2017, Jones was involved in several controversies and lost his light heavyweight title three t
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