A abdominal strain forced the former world No.1 to withdraw from the elite eight-woman event.\n\n
Top seeded Briton Andy Murray was knocked out of the Australian Open in the fourth round on Sunday, losing 7-5 5-7 6-2 6-4 to German world number 50 Mischa Zverev on Rod Laver Arena.
She upset Saori Obata of Japan in the first round of the main draw at the US Open.
Factbox on American Sloane Stephens, who beat compatriot Madison Keys 6-3 6-0 to win her first U.S. Open singles title on Saturday:
Venus Williams, the 2000 and 2001 champion was shocked by Croatia's Karolina Sprem in the second round at Wimbledon.
Garbine Muguruza swapped her rackets for crampons and headed to Tanzania with a friend to climb 5,895 metre (19,340 feet) Mount Kilimanjaro, a five-day expedition in which she scaled
Revenge will again be in the air when the top seed meets Henin in a semi-final grudge rematch on Thursday.
Kim Clijsters swept past doubles partner Ai Sugiyama of Japan 6-3, 6-2.
The world number two secured her first title in Belgium by defeating Italy's Silvia Farina Elia 6-3 6-0 to win the Antwerp Diamond Games.
Venus and Serena have not been beaten as a pair for 16 months now.
The former world No. 1, after half a year out of the limelight, put in a punishing practice session on an outside court at Melbourne Park on Wednesday.
She beat fifth seed Justine Henin-Hardenne 6-3 6-3 in 74 minutes.
Marion Bartoli stormed into her second Wimbledon final after routing Kirsten Flipkens of Belgium in straight sets in the first semi-final of the women's singles in London, on Thursday.
The 26-year-old first reached the top last October but lost the spot 16 weeks later having not hoisted a Grand Slam trophy.
Less than a month after her run to the Wimbledon final, where she lost to Spain's Garbine Muguruza, 37-year-old Williams again had to turn back time against a young challenger.
The 2000 and 2001 champion will be gunning for revenge when play starts on Centre Court at 1400 GMT.\n\n
The sisters are doing it for themselves but their styles could not be more different on and off court
"So far I like what I see. But I think with Venus, if she could just go to net more often," said the six-time Wimbledon champ.
The French top seed beat the American 4-6, 7-5, 6-4 in the final of the Antwerp Diamond Games.
Summary of sports events and persons who made news on Monday
U.S. captain Billie Jean King called up the big guns for the tie against the Czech Republic.
Serena Williams overpowered German Carina Witthoeft 6-2, 6-2 to set up a third-round clash with big sister Venus at the US Open on Wednesday.
The American tennis ace is mapping out a new career as an interior designer.
The US faces the Czech Republic in the first round from April 26-27.
Sania Mirza and Rohan Bopanna, who are touted as India's best bet for a tennis medal in the 2016 Rio Summer Olympics, have been seeded fourth and will be up against the Australian duo of Samantha Stosur and John Peers in their opening mixed doubles match at the Games.
The world number two said her near-misses initially left her deflated and sick of tennis, but she was now over the pain.