I think also though that some of the money raised was going to local charity, so it's good that Andy was involved with having a base in Miami. And also maybe he wanted to show some support to Roddick when asked to be involved.
Yes the money, or what's left after paying appearance fees (unless the players waived them) is going to charity.
Come to think of it - I wonder if the reason the schedule was changed was maybe because our Andy didn't really want to have to play two matches, since that would eaten even more into his valuable training block? Also I think he'd be the only player who'd be prepared to let Roddick beat him just so's he could get to the final, although, and I could be wrong, I somehow can't see either Almagro or Isner not wanting to win. Their 1st set is going with serve and both seem to be playing like it's for points.
And Almagro it is. 6-3, 6-4. Think I'll watch tomorrow and support Roddick. Really like him and will miss him on the Tour.