Serena Williams is always closely guarded wherever she goes to avoid the threat of stalkers but now, it seems, the boot is on the other foot.
The defending champion is such a big fan of American rock band Green Day that she has lost count of the number of times she has seen them play.
"I'm a bit of a stalker," she joked. "I don't know how many I've been to, maybe too much. It's got to the point where I know the run of the show. I always know when the last song is coming, the encore. So it's a bit much. If I were them, I'd kind of watch out for me."
Serena also revealed how she would be relaxing ahead of the women's final. She said: "I'm going to watch some 'Desperate Housewives' because I have to catch up. So I'm excited about that."