Duke had a higher rating for their 26 games on ESPN this season than the network's 101 telecasts for the NBA.
Duke averaged 2.23 million viewers per telecast compared to 1.99 million for the NBA.
The statistics were featured in a Tweet by the Duke basketball program with an image of Zion Williamson attached and the hashtag #TheDukeEffect.
Williamson is expected to be the No. 1 overall pick in the draft and became one of college basketball's most celebrated players in several years.