UFC 4: Revenge of the Warriors was a mixed martial arts (MMA) event held by the Ultimate Fighting Championship (UFC) on December 16, 1994, at the Expo Center Pavilion in Tulsa, Oklahoma. The event was seen live on pay-per-view, and later released on home video.

The Ultimate Ultimate 2 (also referred to as "Ultimate Ultimate 1996" and "UFC 11.5") was a mixed martial arts event held by the Ultimate Fighting Championship on December 7, 1996. The event took place at the Fair Park Arena in Birmingham, Alabama, and was broadcast live on pay-per-view in the United States, and released on home video.

UFC 4 - used an eight-man tournament format, with the winner receiving $64,000. The event also featured three alternate fights. All seven tournament fights were shown on the live pay-per-view broadcast.