70% of first serve till now. Not too bad. It's more the 64% of first serve won which is unusual.
This serve game seemt to be a lot easier. Maybe, he wasn't serving very fast.
Yes, I am talking not about percents but about quality:
Usually it is very hard to take his serve but in Troicki's match (2&3 sets) and now deuce is most useful word for umpire.