Sinner will do Federer and the whole tennis world a huge favor if he somehow takes out Nadal.
Sod was almost 25 y.o. in peaking form, had already played Nadal three times including Wimb 5-setter (and butt picking imitation while waiting on Nadal's serve, no), whereas Nadal after that debilitative Madrid SF vs Djokovic, was still not quite ready for tough bo5 rubbers at RG'09, consequently skipping Wimb. thereafter.Nadal is nervous, slow and fading. All Sinner has to do is make him play. I sense another Soderling event here.