Sandy Pflueger-Clarke rode successfully in both eventing and dressage, placing second in 1981 at the Badminton Horse Trials and was the highest placed finisher in dressage for the United States at the 1982 World Championships. She was third at the 1983 English Dressage Championships. Born Sandy Pflueger, she settled in England in 1974 after marrying British dressage rider Stephen Clarke. Pflueger and Clarke later divorced and in 1997 Pflueger married Mark Phillips, British eventer at the 1972 and 1988 Olympics and coach of the US eventing team. Phillips had been married to HRH Princess Anne, daughter of Queen Elizabeth II. Pflueger and Phillips separated in 2012 after Phillips had become involved with another American Olympic rider, Lauren Hough.