Kareem Abdul-Jabbar (1969-1970)
Then known as Lew Alcindor, Abdul-Jabbar dominated from day one with the Bucks after a legendary career at UCLA. The big man scored 28.8 points and pulled down 14.5 rebounds per game his first season and even added 4.1 assists to boot. His presence — and patented skyhook — helped the Bucks go from 27-55 the year before to a 56-26 campaign his rookie season. Kareem easily locked up Rookie of the Year honors, and finished third in MVP voting — which is an incredible number of MVP votes for a rookie.