A scratch golfer would never make it on tour. You would need a +5 or so handicap just to make the cut on tour. These guys on tour play courses with much more difficulty. Even if you played a tour course, it is MUCH more difficult on a PGA tourney weekend. The greens are twice as fast and the rough is twice as deep. You can bet Tiger and Vijay would shoot in the 50's if they played a regular municipal course.