Looks like the crowd are more vocal in this match, than the other one. I read from a while back that Del Potro has a band.
Really? Can't really imagine him in band (I make music myself)...
The crowd are surely sensing he needs their help. They didn't have to do too much for David.
About the doubles - I'm generally not a big fan of David playing doubles. But if he really wants to, this time it would't be as bad an idea as it was against Russia.
If he does, he'll probably play with Calleri. I've read they've been training a lot.