10. Karl-Anthony Towns (2015):
For much of the spring of 2015, people considered Jahlil Okafor to be the top prospect in the forthcoming draft. But as teams started to poke and prod both Okafor and Towns in the pre-draft process, and after the concerns about Okafor’s total aversion and cluelessness in regards to defense began to grow louder, Towns leapfrogged Towns as the top big man and overall prospect in the draft class.
Plus, teams who took a closer look at Towns’ tape became increasingly intrigued by the shooting form, touch, and feel he showed offensively, combined with a steadily-growing basketball IQ. But to reiterate, while we can look back and see it as a stupid conversation, teams in the spring of 2015 debated whether to take the “more ready to play” Okafor versus the “bigger upside” Towns.