Champion motorcycle racer. In 1978, he became the first American to win the Grand Prix.
He won the A.M.A. Grand National Championship and completed the coveted Grand Slam, winning every Grand National event.
He pioneered many changes in the A.M.A., among them increased safety, a new dirt track riding style, and new engine designs.
His son, Kenny Roberts, Jr., won the 2000 500 cc World Championship.
He and Nicky Hayden were both prominent figures on the motorcycle racing circuit.