You could make your own Happtail! In an article on FSH, there's a lengthy profile of J.A. Happ. What's he made of, Arnsberg?
"He's a student of the game; very mature, but he has some piss and vinegar in him, too. And that's good. Great work habits, relentless in the weight room and strong as a bull. There's a real upside to him yet, and you usually don't say that about someone at that age because they're usually coming into their prime already. But he still has a ways to go before you'll see his peak."