Mammoth. Incredibly immortal achievement.
It’s clearly not harder for Nadal, for him winning the other slams is harderI agree. Although I believe winning 14 RG titles is harder than winning 14 USO titles, simply because of clay being more taxing to the body than grass or hard. There are way more rallies are played on clay on average.
No, because he is much much better on clay than any other alive/dead mankind on another surface.It’s clearly not harder for Nadal, for him winning the other slams is harder