Oh geez. That narrows it down a ton
Sorry to hear about the missing wallet. If it makes you feel any better, someone tried to take off with my football a couple weeks back. (Notice I said "tried.")
Needless to say, this makes me a bit leery about leaving my bag out next to any field I'm playing on. Aside from halftime, I don't pay any attention to my stuff until after the game. That's why I typically leave my most valuable stuff in the car, something you'll probably want to do from here on out.