Possible Duplicate:
Is it “5-6 weeks are a lot of time” or “5-6 weeks is a lot of time”?
I am writing about a baseball player who has 33 at-bats in his career.
Which is correct:
Yes, 33 career at-bats qualifies/qualify as a small sample size.
My guess is that it should be qualify because at-bats is the subject, but it sounds odd.