Tom, you may be right, that does make some sense.
But when I look at, for example, the 195 yard drive red line and where it intersects the 74 yard approach black line, it does not look like that could round up to 311.
Or one drives it say 230 to the end of the fairway, it looks like it'll be about 60 yards in. But that's juts eyeballing a drawing, and what you said does seem logical.