i saw a few latter games... simon was making errors and seemed a bit out of it, like he was in the final set of a 5 set match or something.
i didn't see the whole match though. Simon was a beast* against delpo.
* never thought i'd use that word to describe him!
Disclaimer: I'm NOT a coach...
Real tennis: https://www.youtube.com/watch?v=yDqnkLJ9BtM