UFC 21: Return of the Champions was a mixed martial arts event held by the Ultimate Fighting Championship on July 16, 1999 at the Five Seasons Events...

UFC 23: Ultimate Japan 2 was a mixed martial arts event held by the Ultimate Fighting Championship on November 19, 1999 at Tokyo Bay NK Hall in...

UFC 25: Ultimate Japan 3 was a mixed martial arts event held by the Ultimate Fighting Championship on April 14, 2000 at the Yoyogi National Gymnasium...

UFC 27: Ultimate Bad Boyz was a mixed martial arts event held by the Ultimate Fighting Championship on September 22, 2000 at Lake Front Arena in New...

UFC 33: Victory in Vegas was a mixed martial arts event held by the Ultimate Fighting Championship at the Mandalay Bay Events Center on the Las Vegas...

UFC 35: Throwdown was a mixed martial arts event held by the Ultimate Fighting Championship at the Mohegan Sun Arena in Uncasville, Connecticut on...

UFC 38: Brawl at the Hall was a mixed martial arts event held by the Ultimate Fighting Championship. It took place at the Royal Albert Hall in...

Strikeforce: Triple Threat was the fourth mixed martial arts event promoted by Strikeforce. The event took place at the HP Pavilion at San Jose in...

Strikeforce: Playboy Mansion was a mixed martial arts event promoted by Strikeforce. The event took place on September 29, 2007 at the Playboy...

Strikeforce: Shamrock vs. Gracie was the inaugural mixed martial arts event promoted by Strikeforce. The event took place at the HP Pavilion at San...

Strikeforce: Revenge was the second mixed martial arts event promoted by Strikeforce. The event took place at the HP Pavilion at San Jose in San...