So why is 16, 17, and 18 at Sawgrass included again? Oh, because its a challenge. If that's the criteria, why not 16, 17, and 18 at Carnoustie? If its not difficulty but instead ability to swing a tournament, why not 15, 16, and 17 at TOC?
The non-US courses seemed severely underrepresented, I was going to call them out for not naming any until they threw in a token couple at the end of the list. Blah.