Ronald Nunan Preston is an American former international motorcycle speedway

Motorcycle speedway

Motorcycle speedway, usually referred to as speedway, is a motorcycle sport involving four and sometimes up to six riders competing over four anti-clockwise laps of an oval circuit. Speedway motorcycles use only one gear and have no brakes and racing takes place on a flat oval track usually...

 rider who was World Junior Champion

Individual Speedway Junior World Championship

The Individual Speedway Junior World Championship is an annual speedway event held each year organized by the International Motorcycling Federation since 1977...

 in 1979

1979 Individual Speedway Junior European Championship

-World final:*July 22, 1979 Leningrad...

. Preston began his career at the Poole Pirates

Poole Pirates

Poole Pirates are a motorcycle speedway team based in Poole, England, competing in the British Elite League...

 in 1979 and spent two years there before moving to the Eastbourne Eagles

Eastbourne Eagles

The Eastbourne Eagles are a British speedway team based near Eastbourne, England who compete in the British Elite League. They became Elite League Champions in 2000. They were also Elite League Knockout Cup winners in 2002 and again in 2008. Speedway was initially introduced to Eastbourne in...

 in 1982. He was the first American to take part in the World Junior Championships and won silver medals with the USA team

United States national speedway team

The United States national speedway team are an international speedway team from the United States who compete in the annual major international speedway competition, the Speedway World Cup. They are managed by David Joiner and the current captain is 1997 World Champion Greg Hancock...

 at the 1980 and 1981 Speedway World Team Cup

Speedway World Team Cup

The Speedway World Team Cup was an annual speedway event held each year in different countries. The competition started in 1960 and was replaced with the Speedway World Cup in 2001.-Format:From 1960 until 1985 each team consisted of four riders and a reserve...

. He retired from the sport at the end of the 1982 season due to a knee injury. Preston has two children named Sarah and Hannah, and is married to Julie.