World number two Simona Halep beat Maria Sharapova 6-2, 6-2 in the China Open third round on Wednesday for her first win over the Russian in eight attempts.
Reigning champions Novak Djokovic and Serena Williams have been named top seeds for the Australian Open starting on Monday.
Ukrainian second seed Elina Svitolina ended Naomi Osaka's remarkable recent run with a 6-4, 6-2 triumph over the Indian Wells champion in the second round of the Miami Open on Friday.
Top seed Andy Murray could meet Roger Federer or Kei Nishikori in the third round, while Serena faces tricky Belinda Bencic in opening round
World number one Rafael Nadal is reportedly being offered 1.1 million dollars per night to play in three of the eight matches of the inaugural International Premier Tennis League (IPTL), which has borrowed its format from the lucrative Twenty20 tournament Indian Premier League (IPL).
Holder Petra Kvitova suffered a shock 3-6, 7-5, 6-4 defeat by Serbia's former World No 1 Jelena Jankovic who produced an inspired display in the Wimbledon third round on Saturday.
Novak Djokovic and Serena Williams are top seeds at the major starting Monday
The 36-year-old Australian Open champion arrived in the Dutch port city at the weekend knowing a run to the semi-finals will move him ahead of Rafael Nadal in the ATP standings.
With a career Grand Slam of major titles and a sweet-making business, Maria Sharapova dismissed the idea of staying at home and having a drink.
Novak Djokovic extended his winning streak at the China Open to 27 matches with a 6-2, 6-2 demolition over big-serving American John Isner on Friday.
Serena Williams has been vulnerable this Grand Slam season but unbeaten in the year's first three major championships.
Second seed Garbine Muguruza, bidding to add the Wimbledon crown to her French Open title, was sensationally beaten in the second round on Thursday by Slovakian qualifier Jana Cepelova 6-3, 6-2 in the shock of the tournament so far.
Photos from the matches played at the Miami Open on Tuesday
Serbia's Ana Ivanovic just missed out on a place in the semi-finals of the season-ending WTA Finals despite beating Simona Halep in the final group match on Friday.
The apprehensions attached with a new tennis concept have disappeared as the top international players have embraced IPTL, feels Mahesh Bhupathi, whose league will feature a marquee match between Rafael Nadal and Roger Federer in the capital this season.
Former world number one Novak Djokovic suffered a surprise second-round exit at the Barcelona Open when the Serb was beaten 6-2, 1-6, 6-3 by world number 140 Martin Klizan on Wednesday.
The signs that things were going horribly wrong for Roger Federer were laid bare at Roland Garros.
Victoria Azarenka suffered a stunning meltdown and blew three match points against world number one Serena Williams before losing 7-6(5), 3-6, 7-6(1) in the third round of the Madrid Open on Wednesday.
Jelena Jankovic eased into the last four at the BNP Paribas Open on Thursday when Ukrainian qualifier Lesia Tsurenko retired from their quarter-final with an ankle injury while trailing 6-1, 4-1.
The 36-year-old Swiss master needs only to reach the semi-finals at the ABN Amro tennis event to overtake Rafael Nadal at the top of the ATP rankings and become world number one for the first time since November 2012.
Serena Williams enters the Australian Open as a strong favourite to lift the Daphne Akhurst Memorial Cup but is all too aware that a sixth Melbourne Park title has now eluded her for five years.
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.
Photos from Day 1 of the Australian Open matches played at Melbourne Park on Monday
Ailing knees, Father Time and even a resurgent Victoria Azarenka stand in the way of Serena Williams clinching her seventh Australian Open title and giving her one more shot at an achievement that would cap her storied career.
Images from matches played on Day 4 of the Australian Open at Melbourne Park on Thursday
Garbine Muguruza continued her dream debut at the WTA Finals by completing round robin play with a perfect 3-0 record to advance to the semi-finals after a hard fought 6-4, 4-6, 7-5 victory over Petra Kvitova on Friday.
Garbine Muguruza's preparations for next week's Australian Open were thrown into disarray when the world number three pulled out of the Sydney International with a thigh injury on Wednesday.
World number one Serena Williams was at her lethal best as she crushed Romanian Simona Halep 6-0, 6-4 to romp into the semi-finals of the Western and Southern Open on Friday.
Venus Williams got off to a flying start in her return from a two-month layoff but her game quickly fell apart as the seven-time Grand Slam champion slumped to a 0-6, 6-4, 6-2 loss to Kirsten Flipkens in the Rogers Cup first round on Tuesday.
World number five Juan Martin del Potro began his 2014 season with a win, albeit a scrappy one over Frenchman Nicolas Mahut to advance to the quarter-finals of the Sydney International on Wednesday.
There were no wild celebrations or fist pumps from Serena Williams after she beat Caroline Wozniacki at the WTA Finals on Saturday.
Serena Williams regained her composure after smashing her racquet and being on the brink of defeat to beat Caroline Wozniacki 2-6, 6-3, 7-6 (6) on Saturday and reach the title match at the WTA Finals.
Caroline Wozniacki put a huge dent in Maria Sharapova's bid to finish the season as world number one by overcoming some distracting bright lights to down the Russian 7-6(4), 6-7(5), 6-2 in their marathon opening group match of the WTA Finals on Tuesday.
A summary of sports events and sports persons, who made news on Wednesday
List of Wimbledon women's singles champions:
A long measure of Grand Slam patience paid off for Peng Shuai of China, who reached the semi-finals of the US Open on Tuesday by routing Swiss teenager Belinda Bencic 6-2, 6-1 in the Flushing Meadows heat.
Caroline Wozniacki upset French Open champion Maria Sharapova in a groundstroke marathon to reach the U.S. Open quarter-finals, while Gilles Simon registered the first big surprise in the men's draw.
World No 1 Serena Williams fought her way to a 7-5, 7-5 win over defending champion Li Na to reach the final of the Western and Southern Open on Saturday and close in on one of the few titles to elude her.
World number one Serena Williams opened her US Open account with a tidy 6-3, 6-3 win over Ekaterina Makarova on Tuesday, to join her sister Venus in the second round of the year's final Grand Slam.
Former world number one Andy Murray withdrew from the Brisbane International with a hip problem on Tuesday, further putting in doubt the Briton's prospects of being fit in time for the Australian Open later this month.