Jon Jones, the UFC heavyweight champion, has just one official loss in his storied MMA career. That came against Matt Hamill back in 2009 via a controversial disqualification.

The Hamill Fight Breakdown

On December 5, 2009, at The Ultimate Fighter 10 Finale , Jones dominated Hamill early with ground control and those signature downward elbows. Referee Yves Edwards stopped the fight, ruling the elbows illegal under the unified rules then in place—marking Jones' sole "L" on his 28-1 record (with one no- contest).

Many fans and analysts call it a technicality loss , as Jones was clearly winning and Hamill never recovered; Jones couldn't continue due to injury, but the DQ stuck.

Jones rebounded fast, going on an epic tear with 27 straight wins, including light heavyweight dominance and a heavyweight title grab over Ciryl Gane in 2023.

Fan Debates & Trending Takes

UFC circles buzz with "real losses"—think Dominick Reyes (UFC 247, 2020 unanimous decision many scored for Reyes) or Thiago Santos (UFC 239, 2019 split decision).

Reddit's r/ufc lights up: "Ngannou too... Reyes by decision," with 378+ upvotes on record breakdowns as of mid-2025. Forums joke about "cop car TKO" from his legal woes, but officially? Hamill's it.

TL;DR : Matt Hamill by DQ (2009)—that's the only mark, though close calls fuel endless GOAT debates.

"Jones' record: Wins 27, Losses 1 (DQ to Hamill, controversial)."

Bottom Note : Information gathered from public forums or data available on the internet and portrayed here.