Watson and partner lose out in last eight doubles

Heather Watson and Magda Linette lost in the quarter-finals of girls' doubles event at the Eddie Herr International Junior Championships in Florida.

The first seeds were beaten 3-6 7-5 10-5 by Lidziya Marozava and Polina Pekhava of Belarus on Saturday.

Marozava and Pekhava lost to tournament winners Anna Orlik, also from Belarus, and Russian Valeria Solovieva in the semi-finals.

Watson went out in the last 16 of the singles tournament.

Nine of the women's top 10 will compete at January's Sydney International in the lead-up to the Australian Open Grand Slam, according to organisers.

World No. 1 Serena Williams heads the line-up, which also includes Dinara Safina, French Open champion Svetlana Kuznetsova, Caroline Wozniacki and Elena Dementieva.

Victoria Azarenka, Jelena Jankovic, Vera Zvonareva and Agnieszka Radwanska also join a field boosted by Australia's No. 13 Samantha Stosur and Italy's Flavia Pennetta and Francesca Schiavone.

The only top-10 player missing will be world No. 6 Venus Williams, who will warm up for the first Grand Slam of the year with an exhibition match in Thailand.

France's Gael Monfils, ranked 13, leads a men's field that includes Tomas Berdych, Australia's former No. 1 Lleyton Hewitt and one-time Australian Open finalist Marcos Baghdatis.

"We are delighted with our confirmed player line-ups, in particular our women's field, which is certainly the strongest in the event's history," tournament director Craig Watson said.

"To have nine of the top 10 women in the world playing in Sydney is incredible and tennis fans would be hard-pressed to find a more impressive line-up, outside the Grand Slams, anywhere in the world."

Organisers will leave open spots in both draws for wildcards and qualifiers for the January 10-16 tournament.

Sydney gets nine of the ten top WTA players