It is very much an Out and Back layout and this is reflected in the use of double greens.
There are 7 double greens, leaving only the 1st, 9th, 17th, and 18th greens as single greens.
More about the double greens at the Old Course at St. Andrews
In the early days the holes were literally the same for the trip out and back. The players would play from different tees but over the same fairways to the same hole in the ground. Eventually, as popularity and numbers increased, the single holes become two holes and separated by a safe distance.
If you add the numerical values of each two holes that share a green it adds up to 18 – every time. 2 and 16, 3 and 15, 4 and 14, 5 and 13, 6, and 12, 7 and 11, 8 and 10.
The average size per putting surface is 22,267 square feet compared to 3,500 at Pebble Beach and 6,435 at Augusta.
The largest double green – 5 and 13 is an enormous 37,846 square feet. Imagine the house you could build on that footprint!
GOLF TRIVIA. Your home for fun and interesting golf questions and facts. You simply can enjoy our golf trivia, sign up and become an accredited publisher or subscribe to our newsletter so we can keep you in the loop. It's all for FREE.
Become an Accredited Publisher and get your name in lights on Why We Love Golf. If you’re a passionate writer and researcher join the community, publish your own questions, and be recognised by your golfing peers.