Potentially interesting development overnight.So as it stands Federer is GOAT but Nadal is still coming.
Federer is looking very good this tournament so far, and if he manages to defeat Novak in the final (making the assumption they both make it), takes him to 17 slams. With injuries and age starting to impact Nadal, he may end up well short of 17 slams, despite a one-on-one edge over Fed.
Nadal fans talk about his mental toughness... an example that it might be fading the older he gets was last night. Couldn't handle the emotive side of the match last night, and lost it mentally.
With Novak's recent emergence, how will he respond? Perhaps the answer to that question will go part way to answering the GOAT question.