He broke into the senior ranks in 2006, and was selected for the 4×400  m relay team for the 2006 IAAF World Indoor Championships. Along with Tyree Washington, Milton Campbell and Wallace Spearmon, he won the World Indoor title in the event. Outdoors, he improved his best to 44.14  seconds for a bronze medal at the 2006 IAAF World Athletics Final and was selected to represent the United States at the 2006 IAAF World Cup, at which he won the 400  m competition.