 In 1999, he won twice on the Canadian Tour and led their Order of Merit.Duke first played on what was then the Nike Tour in 1995 and qualified for the PGA Tour in 2004, but failed to keep his card and returned to the Nationwide Tour.In 2006 he finished at the top of the Nationwide Tour money list and won the BMW Charity Pro-Am at The Cliffs, which regained his playing rights on the PGA Tour for 2007.