On June 30 1945
June 25-30, 1945: Francisco “Pancho” Segura of Miami (Florida) becomes the only three-time singles titlist in NCAA tennis championships (the only other three-time collegiate titlist is Malcolm Chace, who competed in the pre-NCAA Intercollegiate Tennis Championships for Brown and Yale from 1893 to 1895).
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