The GOAT discussion reached its most ludicrous point yesterday when John McEnroe’s endless search for an answer to the unanswerable and interminable question landed at Rafael Nadal’s feet after he beat Roger Federer for the 17th time, the sixth time in a Grand Slam final.  (Federer has beaten Nadal only eight times, and only twice in Grand Slam finals.)  McEnroe said something like, “Somewhere in your heart you must think you are the greatest of all time.”  Rafa responded in his usual humble fashion.  “No, it’s Roger. He is the greatest.”   It must feel good to have a .680 winning record against the GOAT.