Slovakia's Dominika Cibulkova shocked fifth-seeded Russian Elena Dementieva 6-4, 6-2 to reach the Montreal Cup third round on Tuesday. Dementieva was joined at the exit door by eighth-seeded compatriot Vera Zvonareva, who was upset 6-3, 1-6, 7-6 by Frenchwoman Virginie Razzano.
During an unpredictable tournament riddled with shocks the one constant has been the ruthless efficiency of Venus and Serena Williams.
Justine Henin began the defence of her Eastbourne International title in fine style on Wednesday, beating Poland's Agnieszka Radwanska 6-4, 6-1 and looking every inch a grasscourt player.
World number two Dinara Safina battled into the fourth round of the WTA event in Indian Wells on Sunday, beating Peng Shuai of China 7-5, 6-4. Fourth seed Vera Zvonareva of Russia booked her place in the last 16 with a routine 6-3, 6-1 win over Czech Petra Kvitova.
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Nicole Vaidisova became the first woman to be fined at this year's Australian Open on Friday, joining 18 men penalised for bad behaviour at the season's first Grand Slam. The Czech received a $2,000 penalty from the International Tennis Federation for failing to appear at a news conference after her 6-2, 6-1 first round loss to Severine Bremond of France.
Amelie Mauresmo's Wimbledon reign ended in a bizarre fourth round encounter when she was upset by the Czech teenager.
World number one Justine Henin brushed aside Czech teenager Nicole Vaidisova to reach the semi-finals of the Eastbourne International.
Also making it to the last eight were Svetlana Kuznetsova and Czech teenager Nicole Vaidisova.
Serena Williams stayed on course for a fourth Sony Ericsson Open title with a ruthless 6-1 6-4 win over Czech Nicole Vaidisova in the quarter-finals on Wednesday.
Unseeded Safarova will take on Russian Nadia Petrova, who beat holder Amelie Mauresmo of France in the other semi-final.
She will play unseeded American Serena Williams in the Australian Open final.
World number one Justine Henin set up a dream final against second-ranked Svetlana Kuznetsova after beating Ana Ivanovic at the Sydney International on Thursday.
China's Li Na continued her giant-killing run at the Australian Hardcourt Championships, beating fourth seed Patty Schnyder to reach the final.
The Frenchwoman, making her way back from a shoulder injury, was upset by Patty Schnyder at the Australian Hardcourt Championships.
Former world number one Amelie Mauresmo suffered a blow to her confidence before the Australian Open when she was beaten by Patty Schnyder in the quarter-finals of the Australian Hardcourt Championships on Thursday.
Amelie Mauresmo ended Nicole Vaidisova's 18-match unbeaten streak to reach the final of the Advanta Championships.
Patty Schnyder defeated third seed Marion Bartoli of France while Daniela Hantuchova edged past Czech Nicole Vaidisova.
The 24-year-old became the first Chinese player to reach a Grand Slam singles quarter-final, toppling Czech number 10 seed Nicole Vaidisova.
Ana Ivanovic will take on Venus Williams in the semi-finals.
Amelie Mauresmo and Maria Sharapova lost their respective fourth round matches at the French Open
The defending champion will play eighth seed Marion Bartoli of France.
Jelena Jankovic beat Czech Nicole Vaidisova while Ana Ivanovic upset 2006 runner-up Svetlana Kuznetsova.
Top seed Nicole Vaidisova was dumped out of the Family Circle Cup on Tuesday in a second-round loss to Michaella Krajicek.
Second seed Svetlana Kuznetsova beat Czech teenager Nicole Vaidisova 4-6 6-3 6-4 to move into the Pacific Life Open semi-finals on Thursday.
The Belgian fifth seed thrashed Svetlana Kuznetsova 6-3, 6-1 in the semi-finals of the Sydney International.\n
"She played some incredible points on match point, she reminded me a bit of myself," said Williams after the match.
She survived a ferocious fightback from China's Li Na on Thursday to book her place in the Sydney International final against in-form Serb Jelena Jankovic.
Top seed Maria Sharapova was stretched by Serbia's Ana Ivanovic before she claimed a 7-6 7-5 win to reach the semi-finals of the Linz Open on Friday.
Patty Schnyder's hopes of qualifying for the WTA Championship in Madrid were dealt a blow when she was beaten 6-2, 7-5 by Slovak Daniela Hantuchova in the first round of the Zurich Open.
The Russian overcame a groin injury to reach her first Kremlin Cup final beating Czech teenager Nicole Vaidisova.
The Czech teenager beat top seed and world number one Amelie Mauresmo 1-6, 7-5, 7-6 in the Kremlin Cup quarter-finals.
Top seed Amelie Mauresmo joined Russian trio Elena Dementieva, Nadia Petrova and Anna Chakvetadze in the Kremlin Cup quarter-finals on Thursday.
China's Yuan Meng beat Indian 16th seed Sania Mirza 6-4, 6-3 in the second round of the WTA tournament in Los Angeles.
Top seed Kim Clijsters held off a late fighback to beat Czech teen Nicole Vaidisova 6-2, 7-6 in the semi-finals of the Acura Classic.
Second seed Maria Sharapova crushed defending champion Mary Pierce 6-2 6-3, setting up a last four clash with Patty Schnyder of Switzerland, who beat number four Elena Dementieva 6-4 6-3.
The Russian will meet Patty Schnyder, who beat number four Elena Dementieva, in the semi-finals of the Acura Classic.