Why was the slam dunk once banned?

For nearly a decade, the most spectacular play in basketball was against the rules. In 1967 the NCAA prohibited dunking in college games — players could not stuff the ball down through the hoop. The ban stayed in force until 1976, meaning a generation of college stars spent their careers with the dunk taken out of their hands entirely.

The ban is almost universally read as a response to one man: Lew Alcindor, the towering UCLA center who later took the name Kareem Abdul-Jabbar. Alcindor was so dominant around the rim that many believed the rule was written specifically to blunt his advantage, and it became popularly known as the "Lew Alcindor rule" — an attempt to legislate against a single unstoppable player.

Denied the dunk, Alcindor simply developed a shot that was even harder to stop: the skyhook, a sweeping one-handed hook released high above defenders. It became the most reliable weapon in basketball history and carried him to a record scoring career in the NBA. The rule meant to contain him arguably helped create his signature move.

The dunk was reinstated for the 1976–77 college season, and the timing fed its rise into an icon. The same era saw the ABA stage its first Slam Dunk Contest in 1976, with Julius "Dr. J" Erving turning the dunk into showmanship and art. Far from a mere two points, the dunk became basketball's signature act of spectacle — the very thing a ban had once tried to erase.