On June 17 1973
June 17-23, 1973: Ben Crenshaw of Texas becomes the first participant to win three straight individual titles in the Division I Men’s Golf Championships (including a 1972 tie with teammate Tom Kite).
Sources:
Sources: “In the Arena: The NCAA’s First Century” by Joseph N. Crowley, NCAA News and Champion magazine archives, the NCAA Media Center, and NCAA record books