@darthseinfeld
https://awardsdatabase.oscars.org/search/results (award category: Actress-Supporting Role, award year: 2010 (83rd))
ACTRESS IN A SUPPORTING ROLE
Amy Adams -- The Fighter {"Charlene Fleming"}
Helena Bonham Carter -- The King's Speech {"Queen Elizabeth"}
Melissa Leo -- The Fighter {"Alice Ward"}
Hailee Steinfeld -- True Grit {"Mattie Ross"}
Jacki Weaver -- Animal Kingdom {"Janine 'Smurf' Cody"}
^
Black Swan's year. I have never seen
The Fighter but caught
True Grit , The King's Speech and Animal Kingdom. Kunis' work was good enough in my opinion although Steinfeld and Weaver's was solid. No way she could have squeezed out Carter though.
The Academy should remove the five-nominee restriction in the category. Bump it to 8 or 10.