- Adam R. Hornbuckle
was born Clarence Earl Robinson, Jr. in San Diego, California. Arnie, as he came to be known, competed in track and field at Samuel F.B. Morse High School in San Diego, specializing in the high jump, long jump, and triple jump. After graduating high school in 1967, he entered San Diego Mesa College. Robinson, who continued to compete successfully in the jumps at Mesa College, earned an athletic scholarship to San Diego State University. In 1970 he won the long jump at the National Collegiate Athletic Association (NCAA) Championships in 25 feet 10½ inches. Although finishing fourth in the long jump at the NCAA Championships in 1971, Robinson won the long jump at the Amateur Athletic Union (AAU) National Championships in the wind-aided distance of 26 feet 11 inches. At the 1971 Pan American Games in Cali Colombia he won the gold medal in the long jump ...
A version of this article originally appeared in African American National Biography.