Santa Clara University

Robertson is one of Santa Clara's top single season strikeout leaders. A graduate of Napa High School (Calif.), Robertson joined the Broncos his sophomore year and was an All-California Intercollegiate Baseball Association selection. In 1965 he earned a run average of 2.20; this remains the fourth-best in Bronco baseball history. The same season he led the team in wins, ERA, complete games, innings pitched, strikeouts, and appearances. In 1966 he signed a professional contract with the San Francisco Giants.