out Todd Medina with Muay Thai knees. Ultimate Fighting Championship Silva entered the UFC on 16 October 1998, at UFC Brazil: Ultimate Brazil, in a match against Vitor Belfort. The match was arguably the worst defeat of his career, lasting only 44 seconds and ending with Silva being knocked down against the cage by Belfort's punches then being stopped by the referee. Silva won his next UFC match on 7 May 1999, at UFC 20, in which he knocked out Tony Petarra with knees. On 14 April 2000, Silva fought for the UFC Light Heavyweight Championship, but lost via unanimous decision to Tito Ortiz at UFC 25. Pride Fighting championships Silva debuted in PRIDE at the Pride 7 event on 12 September 1999, against Carl Ognibene (better known as Carl "Malenko"). Silva used his strength to control Malenko from the ground, demonstrating his grappling expertise, coming very close to securing a guillotine choke and a rear-naked choke during round one, in addition to landing many powerful knees from the clinch. Silva continued to dominate Malenko en route to a decision victory. This dominance would set the tone for Silva's career in the organization. From 1999 to 2004, Silva won eighteen-straight fights in PRIDE, excluding a draw against Mirko Cro Cop (under slightly modified rules in which if the match would go to the time limit, the bout would be declared a draw) and a no contest against Gilbert Yvel (Silva accidentally kicked Yvel in the groin), giving him a twenty-fight unbeaten streak. Silva's reputation as a formidable MMA fighter grew as he developed a successful 5-year win record in the middle weight division (205 lb) of Pride. Silva fought Japanese superstar Kazushi Sakuraba for the first time at Pride 13 - Collision Course on 25 March 2001. Silva won via TKO (knees and soccer kick) at 1:38 into the first round. At Pride 17: Championship Chaos on 3 November 2001, Silva won the inaugural Pride middleweight (205 lb) championship when he defeated Sakuraba for the second time. Sakuraba suffered a broken clavicle and was forced to withdraw after the first round, giving Silva a TKO win via doctor's stoppage. The two fought for a third time on 10 August 2003 at Pride Total Elimination 2003, part of the PRIDE Middleweight Tournament. Silva knocked out Sakuraba with a two punch combination at 5:01 into the first round. Silva faced Quinton "Rampage"