Ivanovic ends Jankovic's title defence in Indian Wells, Clijsters leaves injured

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)
When it was revealed that constant flying, especially long flights, played a role in Serena Williams' 



