Cockerell won gold at the World Junior Championships in the event's inaugural year,
1976. After moving up to the senior level, he won silver at three international competitions – the 1978
Nebelhorn Trophy in West Germany, 1978
Grand Prix International St. Gervais in France, and 1980
Ennia Challenge Cup in the Netherlands. Cockerell won his first senior national medal, bronze, at the 1983 U.S. Championships. He finished 14th at the
1983 World Championships in
Helsinki, Finland. The following season, he won another national bronze medal and was named in the U.S. team to the
1984 Winter Olympics in
Sarajevo, Yugoslavia. There, Cockerell became the first man to execute a triple-triple jump combination at the Olympics, and finished 13th overall after placing 18th in compulsory figures, 17th in the short program, and tenth in the free skate. Concluding his season, he placed 13th at the
1984 World Championships in
Ottawa,
Ontario, Canada. Cockerell was awarded the silver medal at the 1985 U.S. Championships, having placed second to
Brian Boitano. He finished 8th at the
1985 World Championships in
Tokyo, Japan. == Coaching ==