well nadal can beat him Hoshi but it is fairly clear to me that a number of things have affected his game:
his back issues have kept him from training as hard as he needs to so that is one of them.
2nd one is lack of some focus but that is probably of all the back issues.
he is out doing too many things. he took a trip to Oregon after Indian Wells. he was in a Poker tournament in Miami. and then there is golf and all those press interviews.
he just has too much going on but not enough tennis practice. his game is visibly suffering.
I am worried about his fitness. those who were at this match yesterday said he looked slow and somewhat worn out. I am not sure about all that but it is easy to see that his fitness has taken a hit.
Yep. You forgot to add endorsements, accepting awards, and no telling what else.