<page_title> List of IBO world champions </page_title> <section_title> Heavyweight </section_title> <table> <cell> Denmark Brian Nielsen <col_header> Name </col_header> </cell> <cell> Jan 12, 1996 – Jun 18, 1999s <col_header> Duration of reign </col_header> </cell> <cell> 5 <col_header> Defences </col_header> </cell> </table>
Brian Nielsen held the IBO heavyweight title from 1996 to 1999, defending it five times.