Venus Williams edged sister Serena 6-1, 2-6, 7-6 (3) on Friday to reach the final of the Dubai Championships.
Sania Mirza's singles campaign at the Dubai Open ended when she was beaten 5-7, 2-6 by world No 24 Kaia Kanepi of Estonia in the second round on Tuesday.
With a heavy rain expected to hit Flushing Meadows later in the day, Serb Jankovic relied on her trademark dogged retrieving to beat Russian Elena Dementieva 6-4, 6-4 before the muscular Williams swept away Dinara Safina 6-3, 6-2 in the women's singles semi-finals at the US Open.
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.
The Safin siblings surged through the Australian Open draw on Wednesday, women's third seed Dinara and men's former world No 1 Marat sliding into round three. Big brother Safin set up a mouth-watering showdown with second seed Roger Federer after he crushed Guillermo Garcia-Lopez 7-5, 6-2, 6-2, while Safina, chasing her maiden Grand Slam title, beat fellow-Russian Ekaterina Makarova 6-7, 6-3, 6-0. Federer scored a 6-2, 6-3, 6-1 victory over Russia's Evgeny Korolev.
Serbia's Ana Ivanovic claimed her first grand slam title with a 6-4, 6-3 win over Russia's Dinara Safina in the French Open final on Saturday.
Ana Ivanovic will become the first player representing Serbia to be ranked world number one when the new WTA rankings are released on Monday. The 20-year-old Serb dislodged Russia's Maria Sharapova from the top when she defeated compatriot Jelena Jankovic to reach the final of the French Open on Thursday.
Jelena Jankovic reached the semi-finals of the Sony Ericsson Open after Elena Dementieva retired with a back injury.
Fourth seeded Williams beat Serbian second seed Jelena Jankovic in straight sets to win her third US Open crown and ninth Grand Slam title.
A half-fit Sania Mirza and rookie Sunitha Rao tried every tricks in the book but still could not avert a defeat against top seeded Russian duo of Svetlana Kuznetsova and Dinara Safina in the second round of the women's doubles tennis event of the Beijing Olympics on Wednesday night.
Maria Sharapova's French Open hopes were shredded by a familiar foe on Monday, while Roger Federer plunged a dagger into French hearts.
'I was no one. I am here today because I am a proud soldier of the Indian Army,' says Captain Mohammed Quamrul Zaman.
The Indo-American pair went down 6-7, 7-5, 10-4 to Yan Zi and Zheng Jie of China in the semi-final of the Indian Wells tournament.
Also making it to the last eight were Svetlana Kuznetsova and Czech teenager Nicole Vaidisova.
Fixtures from the US Open Women's Singles Round 1 matches
Serena Williams overpowered top seed Svetlana Kuznetsova 7-6, 6-1 to reach her first Kremlin Cup final.
Britain's Andy Murray and Russia's Mikhail Youzhny became the latest seeds to fall in the Kremlin Cup when they lost to lower-ranked opponents in the second round on Thursday.
Second and third seeds Jelena Jankovic and Daniela Hantuchova were sent spinning from the Amelia Island tennis championship on Friday.
Serena Williams applied some coaching tips from older sister Venus in her 6-3 6-2 thumping of sixth-seeded Dinara Safina on Friday that put the American into the finals of the US Open.
The Indian ace beat Russia's Dinara Safina 6-1, 6-2 in the third round in San Diego.
Unseeded Venus Williams marched into the Family Circle Cup semi-finals by beating Spain's Anabel Medina Garrigues 6-4 7-5 on Friday.
Top seed Nadia Petrova made short work of China's Zheng Jie with a 6-2, 6-3 victory to move into the quarter-finals of the Amelia Island championship on Thursday.
Second seed Kim Clijsters cruised into the semi-finals of the Diamond Games with a 6-2 6-1 victory over Serbia's Ana Ivanovic
Amelie Mauresmo and Maria Sharapova lost their respective fourth round matches at the French Open
Martina Hingis reached the final of the Montreal Cup after Anna Chakvetadze retired.
Serena beat Meghann Shaughnessy while Sharapova beat Dinara Safina to move into the Los Angeles Open semi-finals.
The 17-year-old beat Russian Dinara Safina 6-3, 6-4 for her third career title
The Swiss re-entered the upper echelon of women's tennis at number 14 after winning the Italian Open
Martina Hingis swept aside Dinara Safina 6-2, 7-5 to win her first title since ending a three-year self-imposed exile
The victory sent the Swiss through to the Italian Open final against 16th seed Dinara Safina.
The Belgian will take on Germany's Anna-Lena Groenefeld in the final of the Luxembourg Open.
The two will clash for the third time this year at the Indian Wells semi-final
On a day of upsets at the Pacific Life Open, Australian Open runner-up Marcos Baghdatis beat 7th seed Gaston Gaudio.
The US Open champion will meet Francesca Schiavone in the final of the Belgian Open.