Serbian tennis stars Ana Ivanovic and Jelena Jankovic are the leaders in the Race to the Sony Ericsson Championships and have secured their participation in that prestigious event.

They currently occupay the first and second place in the Race to the Sony Ericsson Championships, with world No.2 Jankovic having earned 2,770 points and world No.1 Ivanovic 2,761 points.

The season-ending tournament will take place at the Khalifa International Tennis Complex in Doha, Qatar, from November 4-9, 2008. Six more singles players will qualify, as well as top four doubles teams of the season. (via On the Baseline)

Maria Sharapova defeated Marta Domachowska 7-5 5-7 6-2 in her opening match at the Rogers Cup in Montreal but after the victory the three-time Grand Slam champion withdrew from the tournament with a shoulder injury which could prevent her from playing at the US Open and the Olympics.

The 21-year-old Sharapova will have an MRI scan and the test results will determine whether she will be able to compete at the US Open and the Olympics, two great events coming up in August.

The world No.3 twice required treatment on a right shoulder in the second-round match against Domachowska which was nearly three hours long, and Sharapova served 17 double-faults in that time. (source: BBC)

Top-ranked Ana Ivanovic passed the test of Petra Kvitova, defeating the Czech 6-3 4-6 6-3 in the second round of the Rogers Cup.

Ivanovic, who is unbeaten in the city of Montreal, having won there in 2006, overcame nine double faults and dropping her serve five times in her first meeting with world No. 64 Kvitova.

Ivanovic will need to make better result at the Rogers Cup than her competitors world No.2 Jelena Jankovic and No.3 Maria Sharapova in order to stay on the top of the rankings.

Additional info: Two upsets happened on the third day of the Rogers Cup so far: Stella McCartney-clad Maria Kirilenko, seeded 13th, was knocked out by local player Stephanie Dubois 6-2 2-6 7-6, while No.15 seed Flavia Pennetta lost to qualifier Larcher De Brito of Portugal 6-3 0-6 6-3. (source: CBS, photo: Getty Images)

Agnes Szavay, seeded second at the Nordea Nordic Light Open in Stockholm, was defeated 6-4 7-6 by last-year’s finalist Vera Dushevina in the second round of the Tier IV tournament.

Szavay broke early in both sets, but couldn't capitalize. In the first set she was leading 5-4 and was serving for the set, but made two double-faults and two forehand misses. Eventually, Dushevina entered the quarterfinals by winning a close tiebreaker against Szavay.

World No.14 Szavay made it big last year, but this season hasn’t been so bright for the Hungarian. We’re waiting for her to rise again and reach the very top. (source: CBS, photo: Getty Images)

Seed No.16 Nicole Vaidisova of the Czech Republic and fifth seed Elena Dementieva of Russia were downed in the first round of the Rogers Cup in Montreal.

Vaidisova was defeated by Japanese veteran Ai Sugiyama 6-3 3-6 6-2, while Dementieva lost to Slovakian Dominika Cibulkova 6-4 6-2.

Sugiyama dropped the first three games of the first set, then won eight straight against Vaidisova. Dementieva, who was competing for the first time since losing in Wimbledon semis, was broken five times by Cibulkova and won only 47% of her service points. (sources: CBS, BBC; photos: Getty Images)

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Ana Ivanovic, Maria Sharapova, Aleksandra Wozniak, Dominka Cibulkova, Vera Zvonareva, and the trio of Elena Vesnina, Svetlana Kuznetsova and Elena Dementieva attended the Rogers Cup fashion show in Montreal. Read more »

Dinara Safina confidently defeated Flavia Pennetta 6-4 6-2 to clinch her second title of the year.

The fourth-seeded Russian, who ended Jelena Jankovic’s run to No.1 spot in the rankings by defeating her in the previous round, totally dominated Pennetta’s serve, breaking her six successive times.

With this victory French Open runner-up Safina has climbed to a new career-high ranking of No.8. (source: Reuters, photo via Great Tennis Photos)

Eighth seed Sara Errani of Italy won her second consecutive title by defeating fourth seed Anabel Medina Garrigues of Spain 6-3 6-3 in the Banka Koper Slovenia Open final.

The 21-year-old Errani won her first WTA Tour title in Palermo earlier this month, and has now won 10 matches in a row.

Half of the games in the Slovenia Open final were breaks — Errani converted six of ten break points, and Medina Garrigues three out of nine.

In Portoroz world No.56 Errani upset top seed Maria Kirilenko in the quarterfinals and third seed Caroline Wozniacki in the semis. (source: ESPN, photo via Yahoo)