It's a tough one because you're obviously doing something extremely well to keep putting yourself in that position,

It was an extremely tough match, ... I really had to earn it .

It's a matter of putting as much pressure on Roger as possible, ... No one has been able to find the exact formula to topple him.

He's obviously the favorite,

It's nice to be through to another semifinal, another tough match, ... Every match gets tougher.

I had a tough match in the first round and sometimes that puts you in good stead for the tournament.