This guy, having recently been confirmed for a lower appointment 97-0, would be hard to block, even without the recess appointment:
https://en.wikipedia.org/wiki/Sri_Srinivasan
But is he in the mold of a Scalia in principles and DC Circuit decisions? If not, he is a no go in my book. Since he clerked for OConnor that influences his principles.
Not if they want to block it.