to fight future UFC Light Heavyweight Champion and future UFC Hall of Fame inductee, Chuck Liddell. Horn rendered Liddell unconscious with an arm-triangle choke 12:00 into the bout, which would be the only submission loss of Liddell's career. Horn compiled eight more wins to bring his winning-streak to 15 fights, before making another appearance for the UFC at UFC 21 against Daiju Takase in Cedar Rapids, Iowa. Horn won the bout via TKO 4:41 into the fight. Horn then fought at UFC 22 two fights later against Jason Godsey, who had defeated Horn via submission earlier in his career. His 18-fight winning-streak was snapped in his next fight after suffering a loss via majority decision at the hands of Hiromitsu Kanehara in Horn's RINGS debut in Tokyo, Japan. His next loss was against future Pride Heavyweight Champion and future UFC Interim Heavyweight Champion, Antônio Rodrigo Nogueira via unanimous decision. After a split decision loss to Ricardo Arona in RINGS, Horn made his next UFC appearance at UFC 27 against future Strikeforce U.S. Middleweight Champion Eugene Jackson and won via armbar submission in the first round. In RINGS, Horn faced six-time UFC Champion and UFC Hall of Famer Randy Couture who was able to out strike Horn from the clinch and knocked down Horn multiple times, as Horn would end up losing in a unanimous decision. After the loss to Couture, Horn faced Australian Brazilian jiu-jitsu specialist, Elvis Sinosic at UFC 30. Sinosic, who held a career record 3-3-1 coming into the fight, defeated Horn with an armbar submission. Two fights after a majority decision loss in a rematch with Ricardo Arona, Horn was invited to compete in the Pride Fighting Championships. PRIDE Horn made his PRIDE debut against Akira Shoji on December 23, 2001, at Pride 18 in Fukuoka, Japan. Horn won the bout against the Japanese veteran via unanimous decision. Horn's next appearance for the Japan-based organization was against Gilbert Yvel at Pride 21 and Horn won via unanimous decision. WEC, King of the Cage, and the IFC After his last fight with PRIDE, Horn made his WEC debut at WEC 4 and won via rear-naked choke submission under one minute into the first round. Horn then followed this up with wins over Kristof Midoux, Travis Fulton, Chalid Arrab, and Homer Moore before fighting for the King of the Cage Light Heavyweight Championship against then-champion, Vernon White, who had