Ana Ivanovic advanced to the fourth round of the Sony Ericsson Open after coming back from a set down and then earning a double break in the decider when her opponent, Virginie Razzano, retired with a thigh injury.

The 23-year-old Ivanovic broke the 101st-ranked Razzano in the opening game, but failed to hold her own service game right afterwards and Razzano cruised through the rest of the first set. In the second set, Ivanovic fought off five break points in the sixth game to earn a 4-2 lead and then efficiently went on to win the last set of the match that was finished before Razzano’s retirement. Final score: 2-6 6-2 3-0. Read more »

The quarterfinal encounter of 2008 Indian Wells champion Ana Ivanovic and Marion Bartoli featured 13 breaks of serve in two sets that together lasted more than two hours. The 19th-seeded Ivanovic was desperately fighting, while for the most part of the match seed No.15 Bartoli had a small but valuable advantage. Something was constantly missing in Ivanovic's game and Bartoli moved into the semifinals of the high-profile BNP Paribas Open with a 6-4 7-6(4) victory.

In a slow set full of breaks, at 5-4 Bartoli was serving to win it, and even though Ivanovic earned two break opportunities to level the score, Bartoli prevailed. The second set also started better for Bartoli, but Ivanovic was constantly fighting, leveling, and even led 5-4 for a short time. Bartoli was later serving for the match at 6-5, and even though Ivanovic forced a tiebreak, her troubles were cut short in that set and Bartoli made her way into the semifinals.

It will be Bartoli's third semifinal of the season, after Brisbane and Doha. A semifinalist in Indian Wells earns $150,000. The 17th-ranked Frenchwoman will play either Shahar Peer or Yanina Wickmayer for a place in the title match. (photo: angelicalbite)

In the encounter of two Serbian players and former No.1s, Ana Ivanovic eliminated defending champion Jelena Jankovic 6-4 6-2 in the fourth round of the BNP Paribas Open. Ivanovic, who won the tournament in 2008, having defeated Jankovic in the semifinals, has now extended her career record against the compatriot to 7-3.

Sixth-seeded Jankovic, who defeated current world No.1 Caroline Wozniacki to win the Indian Wells title last year, converted only one of seven break opportunities and after the match, the 26-year-old said how she felt flat, how her feet were not moving and her best game was not there. Ivanovic, on the other hand, was solid and took advantage of Jankovic’s weaknesses.

Quarterfinal opponent of the nineteenth-seeded Ivanovic will be Marion Bartoli. The Frenchwoman advanced when Kim Clijsters retired from their fourth-round encounter with a shoulder injury, despite winning the first set. Clijsters has been taking painkillers for the shoulder problem since before she won the 2011 Australian Open.

Here's how concerned Clijsters is about the injury: "On hard courts I know that I am able to control it. I'm concerned for what's coming up next, and that's the claycourt season." (photo via WTA Tour)

Vera Zvonareva is now just two steps away from her third successive title at the PTT Pattaya Open in Thailand. The top-seeded Russian beat world No.40 Peng Shuai 6-4 4-6 6-4 and earned her 13th consecutive win at the tournament. The victory didn’t come without a challenge, as Peng had two break points to lead 5-3 in the third set. Zvonareva’s next obstacle is Daniela Hantuchova.

Second seed Ana Ivanovic lost in today’s Pattaya quarterfinals. The Serb was defeated by Roberta Vinci, the first time in their five meetings. Final score: 7-5 6-3.

A mention of Galina Voskoboeva’s Pattaya campaign I owe to our reader and contributor John Bolan. Voskoboeva lost in the quarterfinals to Sara Errani, 2-6 6-3 6-2. But this defeated came only after she won two qualifying matches, including one against Sania Mirza (Voskoboeva's first match back from almost a year long injury), and her second-round match against third seed Maria Kirilenko.

Elsewhere, that is in Paris, another tournament is in full swing. As we’re awaiting the spectacle of the day – Kim Clijsters vs. Jelena Dokic, which could earn Kim No.1 ranking – let’s mention a great match that happened between Andrea Petkovic and Bethanie Mattek Sands. Petkovic was in charge during the beginning of the match, her service games were strong and she earned a set point. However, Mattek Sands miraculously got back into the match, and in a tiebreak won that first set, leaving Petkovic in utmost frustration.  Even though the German won the second set, Mattek Sands repeated the history and advanced to the semifinals, 7-6(4) 2-6 6-3. (photo: © Neal Trousdale)

Vera Zvonareva is looking for her third straight title at the PTT Pattaya Open. The top-seeded Russian started off well, with a 6-4 6-2 victory over Tamira Paszek in the first round. Actually, in the first set Zvonareva had a 1-3 deficit, but overcame it and will next play 475th-ranked Thai qualifier, Nungnadda Wannasuk. Zvonareva now has a 13-2 record at the PTT Pattaya Open and her Tuesday’s win is her 11th straight at this tournament.

Second seed Ana Ivanovic was playing only her second WTA match of the season, after her first-round exit at the Australian Open, and beat Nudnida Luangnam 6-0 6-2. By the way, Ivanovic’s trial period with Portuguese coach Antonio van Griche has ended, and they are not continuing their cooperation.

Seventh seed Zheng Jie was taken out by Akgul Amanmuradova, 6-4 7-6(6). She was the only seed that fell on Tuesday. Last year’s finalist Tamarine Tanasugarn is also out, as Ayumi Morita defeated her 6-3 6-2.

Seeds that advanced are No. 4 Daniela Hantuchova, No.5 Roberta Vinci and No.8 Sara Errani. (photo: chascow)