Dokiwari's boxing career has been plagued with disputes with promoters and managers since turning professional in July 1997. Dokiwari's boxing skill has been honed by reputable trainer such as Eddie Futch, Thell Torrence, and Mike McCallum. Duncan dropped a decision to Fres Oquendo early in his career, and after running off 10 consecutive victories, dropped a unanimous decision to Dominick Guinn. A year after the loss to Guinn, Dokiwari was stunningly TKO'd in the first by unknown Stacy Frazier. Despite the loss, he continued his boxing career recording impressive wins against tough opposition. In December 2006 Dokiwari won the WBC USNBC Heavyweight title with an impressive 4th-round knockout of strong and durable Wllie Palms in Laughlin, Nevada. With the victory Dokiwari became the first man to stop Palms.