SVETLANA KUZNETSOVA
Our defending champion is back for a fourth year, and is undefeated after collecting the title in 2002, 2004 and 2006. Now her challenge is to win two years in a row. Winner of eight career titles, including the 2004 US Open, and having been ranked as high as three in the world, 'Sveta' has also twice finished as runner up in the Bali doubles competition. She has beaten most of the top players in the world, and has wins over Venus Williams, Nadia Petrova and Justine Henin this year alone.

JELENA JANKOVIC
One of the most entertaining players on the Sony Ericsson WTA Tour, Jelena Jankovic is making her second trip to Bali after falling to Angelique Widjaja during her previous visit in 2004. Her fighting qualities earned the Serb her first career title in Auckland earlier this year and a further title in Charleston last month, and she held match point against Kim Clijsters before conceding the Sydney final to her. This year she has victories over Amelie Mauresmo, Martina Hingis and Venus Williams.

NADIA PETROVA
Nadia Petrova is a Grand Slam champion in waiting, and a player returning to Bali after an absence of three years. On her previous bid for the title she fell to fellow-Russian Svetlana Kuznetsova in the semi-finals, but she has since developed into one of the most dangerous players on the Sony Ericsson WTA Tour. She now has seven career titles, including the Paris indoors claimed in February this year, and her victims in 2007 include Amelie Mauresmo and Elena Dementieva. She's also a talented doubles player with 12 titles to her name.

PATTY SCHNYDER
Will it be third time lucky for Patty Schnyder? The talented Swiss left-hander played in Bali in 2005 and 2006, reaching the semi-finals on both occasions. Consistently ranked around the top 10 for the past three years, Patty has earned 10 singles titles during her career, with her most satisfying victory coming in her home city of Zurich. When Schnyder's game is hot no player is safe against her, as Justine Henin, Anastasia Myskina and Elena Dementieva have discovered.

FRANCESCA SCHIAVONE
Francesca Schiavone is one of the great characters of the game, and was hugely popular with the tennis fans that flocked to the Grand Hyatt Bali, Nusa Dua two years ago as she swept through to the final before falling to top seed Lindsay Davenport. Last year she was unable to be in Bali as she led her country to victory in the Fed Cup over Belgium, but she is anxious to return to Bali once more. With eight singles titles, the feisty Italian also beat Patty Schnyder on her way to the Luxembourg final towards the end of the 2006 season.

DANIELA HANTUCHOVA
One of the most popular players on the Sony Ericsson WTA Tour, and considered by many of her peers as the best dressed, Daniela Hantuchova will be anxious to make up for her first round exit last year. Since that surprising defeat the Slovak has added the major Indian Wells title to her list of achievements, an event she won for a second time in March with wins over Bali rivals Svetlana Kuznetsova and Francesca Schiavone, as well as Martina Hingis. On top of that, she was a semi-finalist in Doha this year.

JIE ZHENG
Jhi Zheng is one of the top doubles players in the world, underlined when she recently won the Charleston event with Zi Yan. That came on top of six doubles titles during 2006, which included Grand Slam triumps at both the Australian Open and Wimbledon. In 2005, the same pair reached the final in Bali before loosing to Anna-Lena Groenefeld and Meghann Shaughnessy. Those successes have overshadowed the fact that Jie is also a very fine singles player, with Sony Ericsson WTA Tour Titles earned in Estoril, Stockholm, and Hobart.

FLAVIA PENNETTA
Flavia Pennetta will be back for a fourth time in Bali, hoping once more to build on her progress through the draw. On her first visit she lost in the first round, on her second trip in the second round, and last time in the quarter-finals to fellow-Italian Francesca Schiavone, who she helped to the Fed Cup title last September. The holder of three career titles, she stretched former champion Maria Sharapova to three sets at Wimbledon last year, and she was a doubles finalist at the 2005 US Open with Elena Dementieva.