The winner of 'the disease of the year award' goes to ........ Fairy-ring
This pathogen has been in full force this season creating many green rings and localized dry spots within our soil profile.
Above is a picture of its activity on Greywalls #10 tee.

I did go out and hand spot spray the Greywalls greens about 3 weeks ago for Fairy-ring.  This worked very well and saved thousands over a typical blanket application to the entire green surface using the fungicide Prostar and the wetting agent Revolution.
Above is a picture of #14 green on Greywalls.  The right side of this green had the worst infestation.  After hand spraying just the infected areas the mushroom growth stopped and our turf is recovering.