1.    Mark Coleman (1997) ”“ defeats Dan Severn at UFC 12 (2/7/97) to become the first UFC Heavyweight Champion.2.    Maurice Smith (1997) – defeats Mark Coleman at UFC 14 (7/27/97).  Smith defends the title once, against Tank Abbott.3.    Randy Couture (1997-98) ”“ defeats Maurice Smith at Ultimate Japan (12/21/97). Couture loses his title after a contract dispute.4.    Bas Rutten ”“ (1999) defeats Kevin Randleman at UFC 20 (5/7/99) to win the vacant title.  Rutten vacates the title to move down in weight.5.     … Read the Full Article Here