Even his movements seemed practiced and controlled. If it wasn't clear before, it's clear now. Most of the folks who follow Tiger on his trip around the links are there to watch him, not how he performs. Tiger is undisputedly the best player in the world, but even he makes some mistakes. In fairness, the gallery's reaction would be typical of most players they observed.
Pros have it much easier.
Every one of their shots is immediately located by course officials. It leaves much more time for them to assess what they need to do on their next try. I think tournament conditions are worth several strokes every round for the top players. One aspect of professional golf that I was particularly impressed with was the pros' pre-shot routines. Each has one, and they're as different as their individual swings.