When I coached, it seemed like there were the same 5-6 refs, no matter where we went… quite a few of them were reffing me when I was in high school 20+ years before, and I thought they were old then.
The only good thing about that is you know how they’re going to call matches. One of the refs, if you broke 45 on your back, he’s probably going to slap the mat, especially if it’s late in the day. Another, you knew he was going to call stalling on whoever was winning in the 3rd without fail. Another, if you put a guy’s arm on his back, he’d call it potentially dangerous almost immediately.