After watching the entire match against sock I noticed the following:
Positives:
1. Rafa is really hitting the backhand hard, trying to flatten it most of the time, not slicing much.
2. His footwork looked great.
3. The forehand was clicking during almost the entire match.
4. Rafa returned second serves deep, did not leave the returns short like before.
Negatives:
1. Rafa did not serve well. He absolutely MUST serve well against Djokovic!
2. That lapse of concentration when closing sets/matches really needs to stop (going from 5:3 to 5:7 in the third set). He cannot afford not serving out sets in Wednesday!
3. Rafa made some mind boggling unforced errors once again on easy, neutral rallies. He needs to minimize those.
So, I am cautiously optimistic for his match against Djokovic. It is also Rafa's birthday, maybe he will come out really focused and with great determination!