Nadal can't afford to keep having long matches in early rounds. He's not faking. His knees been fukked up for like 9 years. He wore them out trying to adapt to GOATFed back in the day (and he won slams because of it). The knee issues are the repercussions of that go-for-every-ball-like-hell style of play that he perfected beyond Hewitt. Still, sad to see him quit in good form because of that shyt.
I think Djokovic sends Del Potro home in 3-4.