Answered February 27th, 2019

Luka Doncic is currently just the second rookie in NBA history to average at least 20p/7r/5a, joining the great Oscar Robertson.

Who was the last rookie with 20 PPG, 7 RPG and 5 APG in a season?
Interpreted as:
Who was the last rookie with 20 or higher PPG, 7 or higher RPG and 5 or higher APG in a season?