My guess is you probably approached this course like any of the others, SuperDriver. That would be a big mistake. It's not like them. Even SA with the tournament conditions is way harder than what you've seen.
The guy with the 62 had a 69 his first try. Once you get the hang of the wicked fast greens and learn how to deal with fairly radical elevation changes the course becomes manageable and then it boils down to concentration. GL