| | |-align=center |March 4 |UFC 58: USA vs Canada | | Las Vegas, Nevada, USA |9,569 |300,000 | |-align=center |March 10 |Strikeforce: Shamrock vs. Gracie | | San Jose, California, USA |18,265 | | |-align=center |March 15 |K-1 Hero's 4 | | Tokyo, Japan | | | |-align=center |April 2 |Pride Bushido 10 | | Tokyo, Japan | | | |-align=center |April 6 |UFC Ultimate Fight Night 4 |Ultimate Fight Night 4 | Las Vegas, Nevada, USA |843 | | |-align=center |April 15 |UFC 59: Reality Check | | Anaheim, California, USA |13,814 |425,000 | |-align=center |April 22 |Cage Rage 16: Critical Condition | | London, England | | | |-align=center |April 29 |IFL: Legends Championship 2006 | | Atlantic City, New Jersey, USA | | | |-align=center |May 3 |K-1 Hero's 5 | | Tokyo, Japan | | | |-align=center |May 5 |Pride Total Elimination Absolute | | Osaka, Japan | | | |-align=center |May 27 |UFC 60: Hughes vs. Gracie | | Los Angeles, California, USA |14,765 |620,000 | |-align=center |June 3 |IFL: Championship 2006 | | Atlantic City, New Jersey, USA | | | |-align=center |June 4 |Pride Bushido Survival 2006 |Pride Bushido 11 Pride Bushido Survival | Saitama, Japan | | | |-align=center |June 9 |Strikeforce: Revenge | | San Jose, California, USA |10,374 | | |-align=center |June 24 |The Ultimate Fighter 3 Finale | | Las Vegas, Nevada, USA | | | |-align=center |June 28 |UFC Ultimate Fight Night 5 |Ultimate Fight Night 5 | Las Vegas, Nevada, USA |606 | | |-align=center |July 1 |Pride Critical Countdown Absolute | | Saitama, Japan | | | |-align=center |July 1 |Cage Rage 17: Ultimate Challenge | | London, England | | | |-align=center |July 8 |UFC 61: Bitter Rivals | | Las Vegas, Nevada, USA |11,167 |775,000 | |-align=center |July 22 |WFA: King of the Streets | | Los Angeles, California, USA | | | |-align=center |August 5 |K-1 Hero's 6 | | Tokyo, Japan | | | |-align=center |August 17 |UFC Fight Night 6 | | Las Vegas, Nevada, USA | | | |-align=center |August 26 |UFC 62: Liddell vs. Sobral | | Las Vegas, Nevada, USA |9,859 |500,000 | |-align=center |August 26 |Pride Bushido 12 |Pride Bushido Survival 2nd Round | Nagoya, Japan | | | |-align=center |September 9 |IFL: Portland | | Portland, Oregon, USA | | | |-align=center |September 10 |Pride