Kenneth Leroy Roberts (born December 31, 1951 in Modesto, California) is an American former professional motorcycle racer and racing team owner. In 1978, he became the first American to win a Grand Prix motorcycle racing world championship. He was also a two-time winner of the A.M.A. Grand National Championship. Roberts is one of only four riders in American Motorcyclist Association (AMA) racing history to win the AMA Grand Slam, representing Grand National wins at a mile, half-mile, short-track, TT Steeplechase and road race events.
In a 13-year professional racing career, Roberts won two Grand National Championships and three 500 cc world championships including 32 Grand Nationals and 24 Grand Prix road races. He was a three-time winner of both the Daytona 200 and the Imola 200, and was a six-time winner of the Laguna Seca 200. He was the second AMA rider after Dick Mann to accomplish the Grand Slam of winning all five events of the Grand National Championship.
Activity: 1974 - 1983 Grand Prix: 60 Championships (500cc): 3 (1978 - 1979 - 1980) Victories: 24 Podiums: 44 Pole Positions: 22 Fastest Laps: 27 Career Points: 658