In another match in the WTA Championships, an exhausted Maria Sharapova was beaten by Nadia Petrova.
Defending champion Nadia Petrova was also shown the door in the quarter-finals of the German Open.
Kim Clijsters recovered to beat Japanese qualifier Akiko Morigami 4-6, 6-1, 6-3 at the Italian Open
World number one Amelie Mauresmo won 4-6, 6-4, 6-4 to enter the semi-finals of the German Open.
Andy Roddick ran out of firepower and was dumped by David Ferrer at the Nasdaq-100 Open.
Australian Open finalist Marcos Baghdatis lost to Nikolay Davydenko in the third round in Miami
The second seed dismissed a challenge from rising Serb teenager Ana Ivanovic to reach the fourth round of the Australian Open.
Seven top 20 ranked players have already withdrawn from the event.
Nadia Petrova pulled off a stunning 6-3, 7-5 victory over the world number two and top seed.
The Swiss beat third seed Francesca Schiavone 6-1, 6-2 at the Qatar Open
Amelie Mauresmo saved a match point to beat Tatiana Golovin and set up a first all-French Paris Open final.
France's Tatiana Golovin also reached the last four of the Paris Open, claiming the scalp of third seed Nadia Petrova.
Sania Mirza lost to Tatiana Golovin 6-4, 6-2 in the second round at the Open Gaz de France
The third seed won her first Grand Slam title when the Belgian retired from the women's singles final because of injury.
The Indian ace and her American partner Corina Morariu will play 14th seeds Svetlana Kuznetsova of Russia and Amelie Mauresmo of France in the first round.
Hot favourites Russia will take on an under-strength France in the Fed Cup final after both nations completed 5-0 wins in the semis.
The world number two said she wants to concentrate on the 2005 season.
The two players bowed out in the quarter-finals of the Advanta Championships in Philadelphia.
The defending champion lost to Russia's Nadia Petrova 2-6, 3-6 in the quarterfinal.
Amelie Mauresmo won the biggest title of her career on Sunday.
The Frenchwoman advanced to the quarter-finals of the Advanta Tennis Championships with a 6-3, 6-4 win over Japan's Ai Sugiyama.
The French second seed was humbled by Slovenian qualifier Katarina Srebotnik at the Zurich Open.
Davenport saved two match points to beat Hantuchova and reach the quarter-finals of the Zurich Open.
Mary Pierce beat unseeded Italian Francesca Schiavone 6-4, 6-3 in the Kremlin Cup final to win her second title in Moscow
Maria Sharapova will take on Slovakia's Daniela Hantuchova, while Amelie Mauresmo will meet Australian Alicia Molik in the semi-finals.
The 20-year-old Belgian easily beat France's Amelie Mauresmo in the final to pick her ninth title of the year.
Sania jumped 35 places to 99 in the latest world rankings.
Amelie Mauresmo beat American Lindsay Davenport for the first time in 12 matches to enter the semi-finals of the China Open.
The world No 1 beat the American for the first time in 12 matches to enter the semi-finals of the China Open.