No ball spinner, and I don't think I can blame the infection on bowling or bowling equipment (except maybe for making it worse). A few days ago, I accidentally sheered off a piece of the nail reaching into my pocket, and although I smoothed it out with a nail clippers, it left a small corner unprotected by a nail (or "nail-less"?).
Anyway... although quite disappointed I picked up the infection, I can't say that I was surprised with a piece of the nail missing. I wonder, though.....if I had used latex gloves once the nail was damaged, if it might have prevented the infection .... presuming I could still get my fingers in the holes with them on.
Thank you for suggesting the index finger. Not sure it will be comfortable, but my index finger is smaller than the middle [problem] one, so it might work. There's the span issue again, but worth a shot.
I do still have one ball with grips/inserts in it too (I converted to no inserts about 18 months ago, but left that one alone). The hole is bigger, so it might work.
I do appreciate all the suggestions and comments. Even the ones telling me to rest it (except I probably won't listen to those).