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.
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.
Jelena Dokic was unable to shake off the rust of a two-month layoff and lost to Belgian Kirsten Flipkens 6-3, 6-4 in the first round of the US Open on Monday.
Jelena Jankovic was upset 7-5, 6-2 by Slovakia's Dominika Cibulkova in the quarter-finals of the Montreal Cup on Friday.
The former world No 1's second round victory set up a quarter-final meeting with Russia's Anastasia Rodionova at the Bangalore Open.
Dinara Safina shattered Jelena Jankovic's chances of securing the women's number one ranking with a 7-6, 6-1 victory in the semi-finals.
Svetlana Kuznetsova reached the final of the Dubai Championships by beating Serbian fourth seed Jelena Jankovic 5-7, 6-4, 6-3.
Svetlana Kuznetsova reached the semi-finals of the Dubai Championships on Thursday after holding off a strong second set challenge to beat France's Amelie Mauresmo 6-1, 7-6.
The Bangalore Open has received another boost with Serbian world number four Jelena Jankovic confirming her participation in the tennis tournament to be held in Bangalore from March 3-9.
'I had to learn to be patient. I am a different player and a different person than I was three years ago. I still believe I can repeat that 2015-2016 streak when I won four slams in a row, I wouldn't be here if I didn't.'
Players should stop grumbling about playing on the outside courts at Wimbledon and get on with their real jobs, world number one Roger Federer said on Monday. On the sixth day of the grasscourt championships, Serena Williams and Serbian world number two Jelena Jankovic hit out at organisers after they were shunted off the two main showcourts at the All England Club.
Venus Williams secured her place in the semi-finals of the WTA Championships when she completed her round-robin matches with a comprehensive 5-7, 6-1, 6-0 win over her sister Serena on Thursday. It was the first time Serena had lost a set 6-0 since the 2007 Miami final, after which she recovered to defeat Justine Henin for the title.
Defending champion Serena Williams was knocked out by Jelena Jankovic in the quarter-finals of the Australian Open.
Third-seeded Serb Jelena Jankovic beat the defending champion in straighht sets in the quarter-finals of the Australian Open.
Serena Williams and Justine Henin fought off nerves and tricky conditions in their first-round matches at the Australian Open.
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's bid for a fourth straight title ended on Thursday when the world number one lost 5-7, 6-3, 6-3 to unseeded Italian Flavia Pennetta in the second round of the Zurich Open. The Serb was playing her opening match of the week after receiving a first-round bye but showed little sign of having benefited from her brief rest since winning in Moscow.
World number one Jelena Jankovic will face defending champion Elena Dementieva in the Kremlin Cup semi-finals. Both players had to fight hard to overcome their unseeded opponents Friday. Dementieva eliminated fellow-Russian Nadia Petrova 6-4, 4-6, 7-6 while Jankovic beat Italian Flavia Pennetta 7-6, 6-3.
World number one Jelena Jankovic survived a scare before reaching the Kremlin Cup quarter-finals with a 6-7, 6-3, 6-2 win over Vera Dushevina on Thursday. The Serb, who replaced Serena Williams at the top of the WTA rankings on Monday, was in danger of becoming the third high-profile player to bow out of the $2.3 million tournament.
Venus Williams overwhelmed third-seeded Russian Dinara Safina 6-4, 6-2 to reach the semi-finals of the Stuttgart Grand Prix.
American fifth seed Serena Williams withdrew from her Italian Open quarter-final with French qualifier Alize Cornet on Friday because of a back injury, organisers said.
Russia's Maria Sharapova battled past Denmark's Caroline Wozniacki to move into the Italian Open quarter-finals with a 6-4, 7-6 win on Thursday.
Jelena Jankovic won her second tour title of the year after thrashing fourth seed Svetlana Kuznetsova of Russia 6-3, 6-2 at the China Open.
Top seed Jelena Jankovic reached the quarter-finals of the China Open on Wednesday with a 6-3, 7-5 victory over Canada's Aleksandra Wozniak, while Zheng Jie restored some pride for the host nation.
Top seed Jelena Jankovic was bundled out of the Pan Pacific Open in a 2-6, 7-5, 7-5 defeat by Russian Svetlana Kuznetsova in Friday's quarter-finals. The defeat ended the Serb's hopes of recapturing the world number one ranking from Serena Williams this week following her recent loss to the American in US Open final.
Serena Williams hurled her racket skyward and bounded up and down in joy after winning her third US Open title with a 6-4, 7-5 victory over Jelena Jankovic of Serbia in the women's final on Sunday.
Fourth seeded Williams beat Serbian second seed Jelena Jankovic in straight sets to win her third US Open crown and ninth Grand Slam title.
Second seed Jelena Jankovic cruised into the U.S. Open semi-finals with a 6-1 6-4 win over 29th seed Sybille Bammer on Tuesday.
Roger Federer leapt into the fourth round and Jelena Jankovic zoomed in on a maiden Grand Slam crown at the US Open on Sunday when the title favourites discovered their sweet spots at Flushing Meadows. After a week of lukewarm performances, four-times champion Federer turned on the heat with a masterful 6-3, 6-3, 6-2 destruction of Czech 28th seed Radek Stepanek.
Second seed Jelena Jankovic came through another bruising battle at the U.S. Open on Friday, edging past Zheng Jie 7-5 7-5 to reach the fourth round. The Serbian, chasing her first grand slam title, scrambled into the last 16 after two hours nine minutes and will meet 14th seed Victoria Azarenka of Belarus or Caroline Wozniacki, the Danish 21st seed.
The Slovakian eventually won 6-4, 6-1 but the match will be remembered for a ludicrous umpiring decision at a crucial stage of a tight opening set.
Rafael Nadal will try to match his new status as world number one with his first US Open title.
Defending champion Serena Williams battled to a 3-6, 7-5, 6-3 victory over world number four Svetlana Kuznetsova to reach the Sony Ericsson Open final on Thursday. The American, who had to cope with back trouble along with the hot and humid conditions, is bidding to equal Steffi Graf's record of five title successes in the tournament.
Jelena Jankovic reached the semi-finals of the Sony Ericsson Open after Elena Dementieva retired with a back injury.
Sania Mirza dropped 10 places to 60 while Somdev Devvarman rose to 320 in the rankings list released on Monday.
Jelena Jankovic will replace fellow Serb Ana Ivanovic as world number one on August 11, the WTA said on Saturday. With no tournaments taking place next week ahead of the Beijing Olympics, Jankovic will end Ivanovic's nine-week reign when the WTA governing body's computer drops the points from the events played in the same week one year ago.
Ana Ivanovic was stunned 6-2, 1-6, 6-2 by 17-year-old Austrian Tamira Paszek in the third round of the Montreal Cup on Thursday.
Unseeded Thai Tamarine Tanasugarn stunned second seed Jelena Jankovic of Serbia 6-3, 6-2 at Wimbledon.
The 26-year-old American, winner of eight Grand Slam titles, had pulled out of the event last year due to illness.
Champion Serena Williams, top seed Justine Henin and Rafael Nadal had things their way while booking fourth round slots at the Australian Open.