For by giving an award to an unsung hero, they’re no longer unsung, rendering them ineligible for the award, which therefore gets rescinded, meaning they’re unsung again, rendering them eligible for the award once more... Really, this is like the “going back in time to kill your own grandfather” thing, and so is best not thought about too much, because your brain will explode.
Still, I’ve got a few notes of people on the 2016 Diamondbacks, who did not receive as much love as they perhaps should have. This one is generally an open nominations category, so if there’s someone else you feel deserving of a nod, please make the case in the comments, and if there’s room, I’ll see if I can fit them in.