Answered April 3rd, 2019

Luka Doncic joins Jamal Mashburn and Jay Vincent as the only rookies to score at least 1,500 points for the Mavericks.

Who was the last Mavericks rookie with 1,500 points in a season?
Interpreted as:
Who was the last Mavericks rookie with 1,500 or more points in a season?