I posted this answer in good faith, but it's been deleted.
If you can't see it because you don't have sufficient rep to see deleted answers, it said the apostrophe in Oakland Athletics logo relates to the fact that A is a modern colloquial adjective/noun meaning of excellent quality/an excellent example.
The OP assumed A's in the logo specifically and only represented an "ungrammatical" abbreviation of Athletics - my answer said it was a plural collective descriptor for the team (who are all A's in the sense of excellent baseball players).
Some people might disagree this influenced the logo designer, but why should my answer deleted? Whether intended or not, that connotation will be present for some people (not just me, I'm sure).
I'll admit my link confirming the meaning of A was based on searching for "He's fucking A, man!", but since when did ELU get that prissy? That particular search string was an obvious one to choose if I wanted the modern slang definition; why should I have to delete the expletive before posting?
I suppose my question isn't really Why was this answer deleted? It's more Does anyone agree with me that this answer should not have been deleted? So upvote this question if you think it shouldn't.