Rafa is apparently in trouble

[Sentinel]

I'm not sure that is a fitness issue so much as a case of mental laziness, but even if it is, if he plays like he did in the first 2 sets against Goffin yesterday against a Thiem or a Tsitsipas they'll both probably be mentally beat up so bad he doesn't then need to be at full force to finish them off. Djokovic is a different issue.

Yup, I also think it was just a mental lapse or something.

Maybe he was thinking about his wedding and what kind of cake to order.