Speaking of, expect a lot of feeling out during his first fight. This is going to be key. You may have heard of octagon jitters - they're akin to a first time stage actor experiencing stage fright. You get nervous. Your adrenaline dumps, and suddenly, you're slow, sluggish, not yourself, and you get caught. Punk will have the advantage of having performed live in front of huge crowds before, but that doesn't mean nerves will be completely out of the equation. The guy is only human after all. And even if nerves aren't a factor, inexperience will be. No amount of sparring matches time in the cage. So you can expect a lot of feeling out in the cage. You might even hear some boos from the casual and "just bleed" fan types, but it's all part of the game in the end.