I never expected tsitsipas to come back after he was 0-2 sets down. He seemed to be to nervous in the first two sets.
Then when it looked like that he had already lost he just risked more and played more confident and he gained momentum and it was nadal who started to make more easy mistakes then.
Tennis is a mindgame after all. Congrats to everyone who placed a bet on tsitsipas, won't be to many though i think.
As much as I love that comeback by Tsitsipas, it was aided by some kind of injury Nadal had, maybe that back injury which earlier he revealed he was going through because a player like Nadal who thrives in longer matches should have done better than what he did in the 4th and 5th set.
You called it right a mindgame but I would rather giver the edge to Nadal in mind games being in so many finals and semi-finals as compared to his young opponent. Talking of mental strength I have seen Tsitsipas playing rash shots under pressure so glad he was able to outclass the better and more experienced player in Nadal. I would have rather liked Nadal to progress but well done to Stefanos Tsitsipas.