14 January,2013 09:32 AM IST | | PA Sport
The winner of 52 of her past 54 matches, Williams claimed the Wimbledon crown, the gold medal at the London Olympics and the US Open title in a stunning second half of 2012.
"I feel like I have to win seven matches. Everyone in this draw has to win seven matches.
They have the same opportunity to do it as I do. (But) If I can do it, then that would be great."
