Answered March 8th, 2019

Andre Drummond logged his 11th 20p/20r game of 2018-19, tied for the second-most in a season in the last 35 years.

Who was the last player with 11 games with 20 points and 20 rebounds in a season?
Interpreted as:
Who was the last player with 11 or more games with 20 or more points and 20 or more rebounds in a season?