David Thompson, II

From his Wiki page:

After leading North Carolina State University to an undefeated season (27-0) in 1973, he led them to an NCAA Men's Division I Basketball Championship in 1974, including vanquishing the reigning national champions, UCLA.

NC State's game against the nationally 4th-ranked University of Maryland in the 1974 ACC Tournament finale, in an era in which only conference champions were invited to the NCAA Tournament, is considered one of the best, if not the greatest, college basketball games of all time. Thompson and the Wolfpack would go on to win the National Championship that year while Maryland sat at home. Maryland's exclusion from the NCAA Tournament due to the loss despite their high national ranking would lead to the expansion of the NCAA Tournament the very next season to include teams other than the league champions.

Thompson played basketball while the slam dunk was outlawed by the "Lew Alcindor" rule. In 1975, against University of North Carolina at Charlotte playing his final non-conference game at N.C. State, early in the second half Thompson drove the length of the court for his first and only dunk of his collegiate career, a goal that was promptly disallowed by technical foul. Head coach Norm Sloan removed Thompson, to thunderous applause. The ACC's most exciting player, who had performed for three years without ever performing the game's most exciting act, thus passed into history.

Thompson's 44 remains the only number NC State ever retired in Men's Basketball.