Q. Speaking of your homeland, your opponent Tipsarevic talked a lot about facing you. One of the things he talked about was whether it's harder or easier to face someone you're familiar with. What is your mental approach?
NOVAK DJOKOVIC: What did he say? (Smiling.)
Q. He said it's both easier and harder.
NOVAK DJOKOVIC: It's strange feeling. You know, we are professionals. Certainly we both want to win the match when we play against each other. So you kind of forget about, you know, friendship. You put that aside. You know, we never played Grand Slam, though. We never played best of five against each other, so it's going to be a first time experience for both of us. I think it's his first quarterfinals ever in Grand Slam. He's playing the best tennis of his life. He's very confident. But there is certainly this mentally strange feeling when you're playing somebody that is one of your best friends in the private life, as well. So you got to handle that, as well.