Wimbledon 2012: 'Manic Monday' holds no fears for Williams
There is not much on a tennis court that will keep 13-times Grand Slam champion Serena Williams awake at night -- not even today's fourth round clash against a player who won the first set of her last match without losing a point.
The powerful Yaroslava Shvedova stands between the American and the quarter-finals, having dispatched Italy's Sara Errani 6-0 6-4 after winning the first 24 points of the match.
Williams fired down 23 aces, a personal record, as she beat China's Zheng Jie in a tense three-setter.
Like Williams, Maria Sharapova will be aiming to move through the gears on 'Manic Monday', with all the men's and women's fourth round matches scheduled to be played.
Sharapova, bidding to go one better than last year when she lost in the final to Petra Kvitova, has avoided any problems so far without hitting top form but will need to be sharp when she takes on Sabine Lisicki -- the player she beat in last year's semi-finals.
In the second round, Lisicki complained to the umpire about the noise being made by her opponent Bojana Jovanovski and there is speculation that she will do the same today in an effort to get Sharapova to tone it down.