I'm working as a camp counselor, and one of the kids is, from what I've heard, a Georgia state-ranked high school wrestler (not sure if it's freestyle, folkstyle, etc.). The shorts conceal the wheels, but he likes wearing sleeveless shirts. For a high schooler, he has pretty impressive arms but not only that, he has thick traps and thick and wide lats.
When my fellow counselor asked him how he got so big, he simply replied, "Good genes." I asked him how much he does in the big three lifts--bench, squat, and deadlift--but he says he doesn't do any of them because of shoulder problems. He wouldn't say what other exercises, if any, he did that helped him produce his arms and back.
Can "good genes" actually do that much for you, or is he just reluctant to share his program with others? I don't think wrestling alone can produce that kind of physique.