Svetlana Kuznetsova beat Hungarian teenager Agnes Szavay 6-1 6-4 to reach the U.S. Open semi-finals on Wednesday and believes she is a better player than when she won the title in 2004.
Former champions Martina Hingis and Svetlana Kuznetsova took different paths to the third round of the U.S. Open on Thursday.
The defending women's champion was dumped out of the U.S. Open by fellow-Russian Ekaterina Bychkova.
Top seed Svetlana Kuznetsova won the New Haven Open when Hungarian qualifier Agnes Szavay retired with a back injury in the final.
Serena Williams remains on course for a record sixth win at the Sony Ericsson Open after beating sister Venus 6-4, 3-6, 6-3 to set up a final meeting with 19-year-old Belarusian Victoria Azarenka. Azarenka defeated Russian Svetlana Kuznetsova 6-3, 2-6, 7-5 in Thursday's other semi-final to book her place in a top tier final for the first time.
The world number one beat China's Peng Shuai 7-5, 6-2 in the third round.
The Russian beat Italy's Roberta Vinci 6-2, 7-6 in the Toronto Cup on Tuesday.
Jelena Jankovic beat Czech Nicole Vaidisova while Ana Ivanovic upset 2006 runner-up Svetlana Kuznetsova.
Roger Federer had picked out the Russian as his favourite player on the women's tour.
Maria Sharapova showed there was no room for sentiment on Wednesday when she led a trio of Russian seeds into the second round of the French Open.
Jelena Jankovic continued her impressive preparation for the French Open when she beat world number three Svetlana Kuznetsova 7-5 6-1 in the final of the Italian Open on Sunday.
The second seed beat Yuliana Fedak of the Ukraine at the Italian Open.
Ana Ivanovic fought back from a set to beat Svetlana Kuznetsova 3-6, 6-4, 7-6 in the final of the German Open.
She set up a showdown against Serbian 12th seed Ana Ivanovic later in the day.
World number one Justine Henin of Belgium fought back from the brink of defeat to reach the semi-finals of the German Open today, beating fifth-seeded Serbian Jelena Jankovic.
The third seeded Russian rallied to beat the American to reach the semi-finals of the Warsaw Cup.
The Belgian advanced to the German Open semi-finals with a 6-4, 7-6 victory over Russian Svetlana Kuznetsova.
Svetlana Kuznetsova powered Russia into the Fed Cup semi-finals by thrashing Anabel Medina Garrigues 6-3 4-6 6-0 in the first reverse singles on Sunday.
Kuznetsova won the battle of Russians to secure her first WTA trophy since triumphing in Bali in September 2004.
The Slovak won her first title in five years when she beat Svetlana Kuznetsova in the Pacific Life Open final.
She will play number 14 seed Daniela Hantuchova of Slovakia, who wore down number 12 Li Na of China 7-5 4-6 6-1.
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.
Top seed Justine Henin rallied from a set down to beat Jelena Jankovic and reach the final of the Qatar Open.
Justine Henin knocked out Swiss Patty Schnyder 3-6, 6-4, 7-5 to reach the Qatar Open semi-finals.
The two will meet in the semi-final of the Dubai Open on Friday
Amelie Mauresmo reached the Dubai Open final after Serbia's Jelena Jankovic retired through injury when trailing 6-2 on Friday.
In another quarter-final at the Dubai Open, Russian third seed Maria Sharapova beat Switzerland's Martina Hingis.
"If someone wants to make a fashion statement they should go on stage, not on a tennis court," she said with Sharapova in mind.
Sania Mirza lost her women's singles and doubles matches at the Australia Open on Thursday.
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.
The Belgian fifth seed thrashed Svetlana Kuznetsova 6-3, 6-1 in the semi-finals of the Sydney International.\n
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.
Russia's Svetlana Kuznetsova avenged a shock defeat by China's Li Na at the Beijing Olympics in the first round of the Pan Pacific Open on Wednesday. The former US Open champion, toppled by Li at the first hurdle in Beijing last month, won 6-2, 1-6, 6-3 to reach the last 16 in Tokyo.
Australian Open champion Marat Safin withdrew from the Hopman Cup in Perth due to a long-standing knee injury
List of US Open women's singles champions, since 1912.
Singapore Slammers beat Indian Aces 27-21 in what turned out to be a dress rehearsal for the final of the International Premier Tennis League (IPTL), which the two teams will be vying for $1 million prize money.