Khaos Williams Record: 16-5-0

Explosive UFC arrival

Williams announced himself in stunning fashion. In February 2020 at UFC 247, he knocked out veteran Alex Morono with punches in the first round—one of the fastest knockouts in welterweight history. He followed it that November with another first-round KO, this time flattening Abdul Razak Alhassan, a fellow heavy hitter, to push his hype to new heights. His first real test came weeks later in December 2020, when he dropped a unanimous decision to the unorthodox Michel Pereira, the first time an opponent had taken him into deep water and out-pointed him.

Establishing himself

Williams responded with resilience and growth. He outworked Matthew Semelsberger over three rounds in June 2021, then stopped previously once-beaten Miguel Baeza via third-round TKO that November, proving he could finish late as well as early. A pair of close, competitive decision losses—a split-decision defeat to Randy Brown in May 2022 and later a unanimous-decision loss to Andreas Gustafsson in June 2025—were balanced by signature wins, including a split decision over Rolando Bedoya in 2023 and a vintage first-round KO of Carlston Harris in May 2024. A second-round D'Arce-choke submission loss to Gabriel Bonfim in February 2025 exposed his grappling, but Williams returned to form in May 2026 with a first-round TKO of Nikolay Veretennikov.

Fighting style

Williams is one of the most dangerous one-shot finishers at welterweight, a fighter who can end a contest in the opening minute with either hand. Nine of his 16 wins have come by KO or TKO, anchoring a 63% finish rate, and his speed and timing make him especially lethal early. As his career has matured he has shown he can also win on the cards, with six decision victories demonstrating a deeper toolkit than pure power. The clearest weakness is on the ground: his lone submission loss came to Bonfim's D'Arce choke, and grapplers who can drag him into extended exchanges remain the most reliable blueprint against him.

Career highlights

• Lightning-fast Octagon debut — first-round knockout of Alex Morono at UFC 247, among the quickest finishes in welterweight history.
• Knockout artist — a 63% finish rate with nine KO/TKO wins, including first-round stoppages of Abdul Razak Alhassan and Carlston Harris, cements his reputation as a constant highlight threat.
• Proven durability and range — six decision wins show he can grind out three rounds, rounding out a power game that once defined him purely as a finisher.