UFC heavyweight champion Jon Jones has unexpectedly retired from mixed martial arts, UFC president Dana White announced. Jones, 37, confirmed the news on X, citing reflection and a desire to contribute to the sport differently. His retirement leaves Tom Aspinall as the undisputed heavyweight champion, with future plans for the division to be determined at UFC International Fight Week. Jones's career, while marked by numerous victories and records, also faced controversies including legal issues and doping suspensions.

Prepared by Emily Rhodes and reviewed by editorial team.