By Ken Brown BBC TV golf commentator

The 13th has a new tee.

There used to be dogleg from left to right but now it's almost a straight hole.

All the way down the left and right of the fairway there are bunkers - should you land in one of them it's unlikely you'll make the green in two.

The fairway itself is some 25 yards wide and the ball will run for miles and miles if the landing strip is found.

The 13th has the longest green on the course which is divided into two shelves - high side on the right and low side on the left.

Not too far over the back of the green is out of bounds.

With a long-iron second, it's one of the more demanding par fours on the course.