Comments Be certain that the specs on the greens constuction is up to code.
My experience was very similar. The green was about 7 years old and now we are noticing this on one of our other greens. The soil moisture was fine in the that particular spot, we even had to battle the fungus from giving it water. I'm not sure that this is what you are experiencing but it is what we encountered when the green was destroyed in fact it was the first thing my supervisor looked into when the construction crew began their work. I hope that it is helpful.