Brian Patterson is a former American "Old School" bicycle motocross (BMX)

BMX

Bicycle motocross or BMX refers to the sport in which the main goal is extreme racing on bicycles in motocross style on tracks with inline start and expressive obstacles, and it is also the term that refers to the bicycle itself that is designed for dirt and motocross cycling.- History :BMX started...

 racer.

Brian Patterson is the younger of the most potent sibling combinations BMX has ever seen. With Brent

Brent Patterson (BMX rider)

Brent Hathaway Patterson is a former American "Old School" bicycle motocross racer....

 the Brothers Patterson are the only brothers to both hold the National No.1 Pro title in any major BMX sanctioning body. Brent in 1980 and Brian in 1982 and 1983 in the American Bicycle Association

American Bicycle Association

The American Bicycle Association is a United States-based Bicycle Motocross sports governing body in Gilbert, Arizona created by Merl Mennenga and Gene Roden in 1977. It is the largest sanctioning body in the United States concerning BMX. It has tracks in Canada and Mexico as well as in the USA...

 (ABA). They are also the only sibling combination to hold both the no.1 and no.2 national pro plate simultaneously with a major sanctioning body with Brian being ABA number one pro and Brent number two pro in 1982.
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Started racing: At least early 1976 at 11 years old.