Caol Uno
The card was headlined by two Title Bouts, a Light Heavyweight Championship Bout between Tito Ortiz and Evan Tanner, and the first UFC Bantamweight Championship Bout between Jens Pulver and Caol Uno. After this event, in UFC 31, Bantamweight was renamed "Lightweight" under the new Unified Rules of Mixed Martial Arts, defined by the New Jersey State Athletic Control Board. Bantamweight fighters would not again appear in the UFC until after the UFC-WEC merger in 2011. The event featured the first UFC appearances of Phil Baroni, Sean Sherk and Elvis Sinosic.