Kenneth Leroy Roberts (born in Modesto, California) is a former motorcycle racer and the first American to win the 500cc Road Racing World Championship.
Kenneth Leroy Roberts (born in Modesto, California) is a former motorcycle racer. This is to win the 500cc Road Racing World Championship. Kenneth Leroy Roberts (born in Modesto, California) is the first American. This is to win the 500cc Road Racing World Championship.