 The card was headlined by three title bouts, Tito Ortiz vs. Vladimir Matyushenko for the Light Heavyweight Title (Vitor Belfort was unable to fight due to arm injury while training), Dave Menne vs Gil Castillo for the new Middleweight Title and Jens Pulver vs Dennis Hallman for the Lightweight Title.UFC 33 was the first mixed martial arts event sanctioned by the Nevada State Athletic Commission, under the Unified Rules of Mixed Martial Arts, which were first established by the New Jersey State Athletic Control Board in April 2001.UFC 33 is commonly pointed to as one of the worst in UFC history, failing to captivate the new pay-per-view audience due to the large number of decisions on the card – UFC 33 was in fact the first event where all main event fights went to a decision.