"I feel today was a little bit quicker, the things. Depends on the umpire, how quick he puts the clock going. So that's it, no?" Nadal said. "I follow the rules. I just need to get used to play like this, and I don't have any doubt that I will."
The Spaniard had only the best things to say about Wawrinka, who's ranked No. 195 as he picks up speed in his comeback from knee surgery.
"I’m very happy to see Stan playing so well again. I know how tough it is from my personal experience [to come back]," Nadal said. "If he is healthy, I have no doubt he will be back in the right position and fighting for the biggest events."