Bob Roll
（重定向自Bobke）
Bob "Bobke" Roll (born July 7, 1960, in Oakland, California) is an American former professional cyclist, author, and television sports commentator. He was a member of the 7-Eleven Cycling Team until 1990 and competed for the Motorola Cycling Team in 1991. In 1992 Roll moved to Greg LeMond's Z team and added mountain biking to his racing accomplishments. Roll continued racing mountain bikes professionally through 1998. Roll is known in the cycling world, and to his global cable television fans, fondly, as "Bobke".