Who do you think will be the first MAJOR SNL cast member (likely former, but can be current too) to win an acting Oscar?

Yes, I know Robert Downey Jr. is both technically a former cast member and an acting winner. However, I want to specify MAJOR as in someone who was on the show for more than a year and is a notable one (eg. Eddie Murphy, Will Ferrell, Kristen Wiig, etc.). RDJ doesn't count because...

1. Loads of people don't remember or even know he was a cast member.
2. Because of that, it was forgettable season too.
3. He only lasted a year and then got fired!

So I'm wondering who.