"It's tough to hurt him. I tried, many ways, to hurt him. And actually I can't do that," Dutra Silva said with a smile. "I tried to play baseline. I tried to hit and hit the ball. I tried to play fast. It's so tough."
US Open 2012: Novak Djokovic rolls on to third round →
Dutra Silva said that while Djokovic's first serves were hard to handle — the Serb did hit six aces — it was what happened once the ball was in play that was more problematic.