Honestly though, why even use OC? I mean, are we concerned about people thinking we mean the defensive center or the special teams center (plausible but a totally different position with a different name entirely)? All the o-line positions are like that. OLT? As opposed to the defensive left tackle?
Using OC when taking about the center instead of just using C is unnecessary. I'm not judging anyone (much) and I don't mean to derail the thread, but it is a very unnecessary additional letter for what is being discussed and it does overlap with an abbreviation that needs to be OC.
It's not confusing, although it does raise the question
EDIT: Some clarity and correcting a tpyo