Sport
G.O.A.T.
Nadal at the AO 2009 and Nadal and Djokovic at the AO 2012 showed exceptional stamina. It's probably between these 2,
Now, Nadal at W 2018 is being overlooked here. He was 32 years old, no longer at his purest physical prime, and still played a 5 sets, 4 hours and 47 minutes QF with Del Potro, and then a 5 hours and 15 minutes SF with Novak (second longest ever W SF) back to back. That is to say, Nadal played at age 32 10 hours back to back in Slam matches and still lost due to Novak's clutch passing shot in the break point of the 5th, rather than due to him being tired.
So I'm personally voting for Nadal, but can see an argument either way.
Now, Nadal at W 2018 is being overlooked here. He was 32 years old, no longer at his purest physical prime, and still played a 5 sets, 4 hours and 47 minutes QF with Del Potro, and then a 5 hours and 15 minutes SF with Novak (second longest ever W SF) back to back. That is to say, Nadal played at age 32 10 hours back to back in Slam matches and still lost due to Novak's clutch passing shot in the break point of the 5th, rather than due to him being tired.
So I'm personally voting for Nadal, but can see an argument either way.