Answered April 23rd, 2019

Joel Embiid is the first player to average at least 20 PPG and 10 RPG in a playoff series against the Nets since Tim Duncan in 2003.

Who was the last player with 20 PPG and 10 RPG in a playoffs against the Nets?
Interpreted as:
Who was the last player with 20 or higher PPG and 10 or higher RPG in a playoffs against the Nets?