Russian second seed Anastasia Myskina made a disappointing start to her 2007 campaign on Monday, falling at the first hurdle in the Auckland Classic to Argentina's Gisela Dulko
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.
Sania Mirza, world No. 17 Karolina Sprem of Croatia and Thai star Tamarine Tanasugarn have also confirmed for the September 19 to 25 WTA tournament.
French Open champion Anastasia Myskina lost to 15-year-old Czech Nicole Vaidisova in the second round of the Family Circle Cup.
"There was a misunderstanding with the translation because I didn't say that I'm not going to play at all," said Myskina.
The 22-year-old Moscovite beat Amelie Mauresmo in the final.
The Former French Open champion lost to 17-year-old Agnieszka Radwanska in the first round of the Warsaw Cup.
Anastasia Myskina refused to back down on Thursday after saying she would not play for Russia if Wimbledon champion Maria Sharapova joined the team.
The duo's feat of setting up the first all-Russian Grand Slam final at the French Open was hailed as a great victory for all of Russian sport.
The defending champion was beaten by Spaniard Maria Sanchez Lorenzo.
A factbox on Anastasia Myskina, who became the first Russian woman to win a Grand Slam singles title.\n\n
After losing a 38-stroke exchange midway through the second set, Myskina responded by cracking her racket.
The 23-year-old Federer dominated the men's game this year, winning 11 titles including three Grand Slams and the Masters Cup.
The Russian said it is an open secret that Sania did not like playing on clay.
U.S. Open champion Svetlana Kuznetsova beat Australian Samantha Stosur 6-4, 6-4 to reach the quarter-finals.
Anastasia Myskina kept Russia's Fed Cup hopes alive by beating Moscow-born Tatiana Golovin in the second singles of the competition final against holders France.
Croatia's Karolina Sprem toppled an injured Elena Likhovtseva, the second seed in the semi-finals.
The Russian top seed beat Florida-based Shikha Uberoi to join Estonia's Kaia Kanepi and Croatia's Karolina Sprem in the last four stage of the Sunfeast Open.
The French Open champion won 6-4, 7-6 to reach the Kremlin Cup final for the second year in a row.
The Russian ace was beaten by Nicole Vaidisova in the Family Circle Cup second round.
The Russian pulled out of the tournament because of a foot injury.
Anastasia Myskina won the singles and doubles titles at the Sunfeast Open
Anastasia Myskina and Vera Zvonareva powered Russia to their first Fed Cup title by winning the decisive doubles against holders France on Sunday.
The French Open champion outlasted fellow Russian Vera Zvonareva in a thriller at the Acura Classic.
The Kolkata event will take place from September 19 to 25.
Conchita Martinez rallied from a set down to beat Roberta Vinci of Italy 5-7, 6-0, 6-2 in the first round of the Qatar Open.