Joel Embiid could become the first 76ers player with 20 PPG & 10 RPG in a season since Barkley in 1991-92.

When was the last 76ers player with 20 PPG and 10 RPG in a season?
Interpreted as:
When was the last 76ers player with 20 PPG with a minimum of 57.4 games played per 82 team games and 10 RPG in a season?