He's fine after a long break, but this week and the way he looked in that awful Miami loss makes me think he should not be doing back to back tournaments again. The main thing is not getting hurt, and the fact of the matter is his risk of doing that is much greater by possibly overplaying, especially when he is getting moved around so much when he plays poorly.
I'm still not entirely sure he is 100%, he looked like he was 46 years old for much of the week and even yesterday the movement looked hampered.