he cant do it man he cant do it......you are talking about adding double of his current GS's.............wont happen
Who is going to stop him at this point ? (if Nadal retires).
Fed is nearing the end, Nadal seems to be done as it pains me to say it.
His only threat is Murray from now on. If he plays 5 more years he's clear cut favorite for RG and AO and a favorite for USO. If he only takes 9 slams from those 5 years he's there. He might even nick 1 or 2 Wimbys by then.