Juan Carlos probably was there in Flushing Meadows untill late at night waiting for the organizers to take some decision that they couldnt play at all after the rain came back. Therefor, it would be terrible for him if he had to play the first match. As it keeps on raining, though, its not even important anymore. If it keeps on like this, they will probably put loads of singles matches at the same time, in even more courts all over. Its the only way to get out of the trap they created for themselves.
Thats the ONE good point of the rain: seeing the a**holes realize they have to think better next time.