There is no one who can beat this man on clay. And this being his home court it will be impossible to even win a set let alone a match when he is playing like he has been thru out this Spanish open in Madrid.
He will be facing Domnic Theim next and will have no problem passing him to face the next opponent in the round of the quarter-finals.
Watched Theim's match too and he is having trouble with pulling back his shot and is overshooting the ball outside the lines on the back court.
You are probably correct but on the other hand if I had to pick player which can hurt Nadal on this tournament it is Thiem. If he has his day he has enough power to win the match even against Nadal. I am not seeing that happening today, but I will not risk the money on Nadal at such low odds against player who can shoot trough anyone.
I am expecting a match where Thiem will be a better player in short spells of few games here and there and Nadal prevailing trough consistency after Thiem starts missing his shots.