 In 1987, Dover defeated Reiner Klimke, a six-time Olympic gold medalist, at the German Aachen Grand Prix freestyle competition.In doing so, he became the first American in 27 years to win that event.In 1994 he was named the US Olympic Male Equestrian Athlete of the Year, and in 1995 awarded the Whitney Stone Cup, given by the United States Equestrian Federation (USEF) for excellence in international competition.