Most important epistemologists since 1945?

Inspired by this comment  (#9) about the earlier poll about moral & political philosophers, here's one about epistemologists (broadly construed to include decision theorists/formal epistemologists) whose main work was done since 1945.   I've lowered the age for living epistemologists to include those 50 or older who might rank in the top 20.  I hope there aren't too many egregious omissions this time around; I consulted a variety of sources to try to avoid that.  Of course, you should only vote if you have knowledge!

ADDENDUM:  Note that many prominent contributors to contemporary epistemology (e.g., Hawthorne, Lackey, Kelly, Pryor, Stanley, Elga, Pritchard et al. do not make the age cutoff [unless I'm mistaken!]).