Academy Award for Best Director
He was the first African American filmmaker and the youngest person in history to be nominated for a Best Director Oscar.
Singleton, the first African-American filmmaker to be nominated for a Best Director Oscar, suffered a stroke earlier this month.
In the Best Picture race, things aren't looking good for two of the year's most popular movies.
The 61-year-old "BlacKkKlansman" filmmaker has received shockingly scarce Oscar love in his decades as an auteur.
The Mexican director's "The Shape of Water" earned 13 nominations on Tuesday.
Avildsen died Friday. His family said he'd been suffering from pancreatic cancer.