Pride 6 was a mixed martial arts event held by the Pride Fighting Championships. It took place at Yokohama Arena in Yokohama, Japan, on July 4, 1999. The first four matches were won by decision. The event also featured a karate match between Hiroki Kurosawa and Nobuaki Kakuda.

Pride 9: New Blood was a mixed martial arts event held by the Pride Fighting Championships. It took place at the Nagoya Rainbow Hall in Nagoya, Japan on June 4, 2000. Matt Serra was to fight on this card, but his opponent, Johil de Oliveira, was injured by a pyrotechnics explosion at the event.

UFC 15: Collision Course was a mixed martial arts event held by the Ultimate Fighting Championship on October 17, 1997, in Bay St. Louis, Mississippi. The event was seen live on pay per view in the United States, and later released on home video