[Matt]

A lot of it is distances and knowing where to place your ball off the tee. The yardage books they have are ridiculously detailed. Every sprinkler head's yardage is noted, both to front and middle of the green. Distances to trees, bunkers, hazards, where the fairway tapers in, to the green over the left greenside bunker, everything you could imagine.

Yes, you still have to hit the shots. But when a tour player knows it's 219 yards to the right fairway bunker, they can plan for it much better than the average guy.