India, June 22 -- Heavyweight champion Jon Jones has officially retired from mixed martial arts (MMA), UFC CEO Dana White announced in Baku, Azerbaijan. Following Jones' retirement, Tom Aspinall has been named the UFC's undisputed Heavyweight champion.

"Jon Jones called us last night and retired," White said. "Jon Jones is officially retired. Tom Aspinall is the Heavyweight champion of UFC."

Shortly after the announcement, Aspinall took to Instagram, saying, "For you fans. It's time to get this heavyweight division going. An active undisputed champion."

Jon Jones is engaged to Jessie Moses. The couple, together for many years, share three daughters: Leah (born 2008), Carmen Nicole Jones (born 2009), and Oliviva Haven Jones (born 2013)....