Venus Williams' return to action following a five-month injury layoff ended in defeat.
Simona Halep is emerging as one of the few players on Tour.
Serena Williams reached the quarter-finals of the French Open on Monday after a clinical display saw he beat Canadian Aleksandra Wozniak 6-1, 6-2. The 2002 champion, at 27 the oldest woman left in the draw, will face seventh seed Svetlana Kuznetsova for a place in the last four. The Russian beat Poland's Agnieszka Radwanska 6-4, 1-6, 6-1.
Serena Williams fought off swirling winds and a bold challenge by Czech Klara Zakopalova to reach the second round of the French Open with a 6-3, 6-7, 6-4 win on Tuesday.
Serena Williams edged past Spain's Garbine Muguruza 2-6, 6-3, 6-2 to reach the quarters.
Serena Williams is under investigation by U.S. Open tournament officials for the ugly outburst she directed at the chair umpire during her loss to Australian Sam Stosur in the final on Sunday.
Victory in Melbourne would be sure to put a smile on her face, though. It would give her the oft-mentioned 'Serena Slam'.
Second seed Serena Williams admitted closing the roof on Rod Laver Arena because of the soaring temperatures helped her battle back from a first set deficit to beat Svetlana Kuznetsova 5-7, 7-5, 6-1 on Wednesday. The American's victory prevented a Russian sweep of the Australian Open semi-finals and she will now play Elena Dementieva in the last four on Thursday.
US won 4-1 against Argentina in the Fed Cup World Group II tie.
World number two Serena Williams retired from her first-round match against Francesca Schiavone at the Madrid Open Monday with a knee injury after losing the first set to the Italian.
Serena Williams extended her winning streak to 29 matches when she beat Russian Svetlana Kuznetsova 6-1, 3-6, 6-3 in the quarter-finals to continue her run towards a second French Open title on Tuesday.
Serena Williams saved three match points and Novak Djokovic revived his stuttering Australian Open preparations in fierce heat at the Sydney International on Wednesday.
The top seed celebrated her 23rd birthday with a come-from-behind win over Russian Svetlana Kuznetsova in the final.
The ruthless American needed less than an hour to defeat Sharapova 6-1, 6-1 and notch her 19th consecutive win over the Russian in what some charitably dub a "rivalry."
IMAGES from the PNB Paribas Open played at Indian Wells in California on Monday
Serena Williams summoned all her fighting qualities to beat Victoria Azarenka 4-6, 7-6, 6-2 at the Australian Open on Wednesday after sister Venus's exit. Li Na earlier stunned Venus to become just the second Chinese to reach the semi-finals of a Grand Slam.
Serena Williams takes centre stage on Centre Court when she lines up opposite 16-year-old Tatiana Golovin.
Williams, a record 23-times Grand Slam champion, will be returning to the All England Club for the first time since giving birth to her daughter last September.
Defending champion, Serena Williams has accused the Wimbledon organisers of favouring male players at the tournament.
The mother-to-be showed off her baby bump in a flowing green gown as she entered with fianc Alexis Ohanian.
Serena Williams thrashed Russia's Dinara Safina 6-0, 6-3 on Saturday to win the Australian Open title and reclaim the world number one ranking. The American raced to victory in just 59 minutes to capture her fourth singles title at Melbourne Park, after her previous wins in 2003, 2005 and 2007, and her 10th Grand Slam overall.
Serena Williams is intent on defending her Olympic titles in Rio and finds it sad that several athletes will miss out on an 'amazing' experience because of worries about the Zika virus.
World number one Caroline Wozniacki might have been better off asking Serena Williams about how to win the biggest tournaments instead of seeking guidance about relationships.
Seventh-seeded Briton Tim Henman was a surprise loser, however, as he went out 7-6 2-6 7-6 to world number 64 Juergen Melzer at the Nasdaq-100 Open.
Serena Williams made a triumphant return to the WTA Tour on Thursday, crushing China's Zhang Shuai 6-2, 6-3 in the second round of the Sony Ericsson Open in Miami.
Serena Williams capped off yet another successful day at Wimbledon for America's premier tennis family as she followed up her singles triumph by winning the doubles title with sister Venus on Saturday.
Serena Williams's health and gamesmanship were the subjects on everyone's lips at the French Open.
Serena Williams returned to the top of the WTA world rankings on Monday and immediately shared the news with her unborn baby.
World No 1 Serena Williams edged an enthralling battle with third-seed Simona Halep.
Most of India's oil supplies are expected to stay safe because of the country's good relations with both Russia and Iran. That would take care of over a third of India's supplies.
As Russian Maria Sharapova and American Serena Williams get ready to slug it out in their big-ticket semi-final, records and history tells us who has had the upper hand.
Serena Williams has clinched the year-end women's World No 1 ranking for the third time in her career after winning two Grand Slam titles during an excellent 2013.
Novak Djokovic and Serena Williams were named men's and women's world champions for 2015 by the International Tennis Federation on Tuesday. The Serb ended the year as men's world number one for the fourth time after taking three majors - the Australian, Wimbledon and US Open, as well as finishing runner-up to Stan Wawrinka in the French. Williams also narrowly missed a calendar-year grand slam, winning the Australian, French and Wimbledon and reaching semi-final at US Open.
Miami is one of the favourite stops on the WTA Tour because of the city's hip, youthful vibe but the final of Sony Open on Saturday was more about the golden oldies as Serena Williams and Li Na took centre stage.
Rafael Nadal thumped Canada's Milos Raonic while to capture his eighth ATP title this season while Serena Williams crushed Romania's Sorana Cirstea in the final of the Rogers Cup on Sunday.
World No 2 Serena Williams shook out any cobwebs from four months away from tennis with a 6-3, 6-4 victory over France's Pauline Parmentier in the first round of the Auckland Classic on Tuesday.
Serena Williams is already assured a place in tennis history but her coach believes the 16-time Grand Slam champion will soon embroider her status among the greats.