Answered April 20th, 2019

Joel Embiid is the first Sixers player with at least 30p/15r in a playoff game since Charles Barkley in 1990.‬

Who was the last 76ers player with 30 points and 15 rebounds in a playoff game?
Interpreted as:
Who was the last 76ers player with 30 or more points and 15 or more rebounds in a playoff game?