Career* wins for great work? (*conditions in post)

I was thinking that, what are some wins we all think were partially for their career that, whether you otherwise like the movie or not, were accurate in rewarding excellent work?

A few conditions to help narrow down what we discuss:

1. Has to be their first win

2. Has to not be their first nomination

3. The movie can't have swept (say, 5+ Oscars), because then it might be part of the movie's love.

I'll name a few recent ones that I was happy about:

1. Morricone for The Hateful Eight

2. Dern for Marriage Story

3. Lee (et al.) for Blackkklansman

4. Davis for Fences

5. Plummer for Beginners

You?