|Dave Menne||September 28, 2001||Las Vegas, Nevada||-a-|
|Murilo Bustamante||January 11, 2002||Uncasville, Connecticut||-b-|
|Evan Tanner||February 5, 2005||Las Vegas, Nevada|
|Rich Franklin||June 4, 2005||Atlantic City, New Jersey|
|Anderson Silva||October 14, 2006||Las Vegas, Nevada|
-a- Defeated Gil Castillo via unanimous decision to win title.
-b- Title vacated on October 5, 2002 after Bustamante signs with PRIDE
-c- Defeated David Terrell to win the vacant title.