In March, Jankovic beat Caroline Wozniacki to win the BNP Paribas Open at Indian Wells.
The 26-year-old will now face Tomas Berdych in his eighth consecutive semifinal at Indian Wells.
They haven't squared off since the semifinals of last year's tournament in Indian Wells.
Ivanovic, the 2008 Indian Wells winner, beat French seventh seed Marion Bartoli 6-3 6-4 in their quarterfinal.
She didn't play competitively again until March 2009, when she entered the doubles tournament in Indian Wells, Calif.
Sharapova, ranked No. 2, is aiming for her second title of the year after winning in Indian Wells.
He soon beat Mr. Djokovic in Dubai and arrived at the BNP Paribas Open in Indian Wells, Calif.
Hewitt became the first back-to-back winner at Indian Wells since Michael Chang successfully defended his title in 1997.
Hewitt has already won twice on the ATP tour this year, at Indian Wells, California and Scottsdale, Arizona.
Sharapova seeks to become only the third woman to win Indian Wells and Key Biscayne back to back.
Nadal, a two-time former winner in Indian Wells, said he was in good shape for the challenge ahead.
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Raymond Moore, the CEO of Indian Wells, said the ATP's position was simply cover for a larger issue.
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Meanwhile, top-ranked Victoria Azarenka will play world No. 2 Maria Sharapova in Sunday's women's final in Indian Wells.
The 24-year-old reached the fourth-round of the Australian Open in January and the semifinal in Indian Wells in March.
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Del Potro reached the final at Indian Wells last week, but was unable to see off 89th ranked Kamke.
One feels for the night-session ticketholders in Indian Wells Wednesday, but that's more a problem of scheduling than tennis.
He'll have that to deal with at Indian Wells, plus a far deeper field than he faced in February.
And they'll play on hard courts, not clay, first in Indian Wells, Calif.
She beat Caroline Wozniacki in the Indian Wells final a week ago and has a record of 16-2 this year.
Odesnik failed to qualify for this week's Miami Masters after losing in the first round at Indian Wells earlier this month.
Indian Wells, with an expected field that boasts the top men's players in the world, will help determine whether that is possible.
In Mexico, Nadal told reporters that he would evaluate his knee after this event and decide whether he's fit for Indian Wells.
Hewitt lost to El Aynaoui at the first Grand Slam tournament of the year, and was close to another defeat in Indian Wells.
He reached the final at Indian Wells before losing to Nadal's conqueror Ivan Ljubicic, and was also a semifinalist in Miami in 2008.
"All the credit to him, " said the Serb, who also lost to Juan Martin del Potro at the recent Indian Wells Masters event.
Nadal will be tempted to play in Indian Wells, a favorite event where the slower hard courts and desert air suit his game.
Serbian Djokovic, the 2007 champion, successfully defended his Dubai title last month but bowed out in the last-16 at Indian Wells two weeks ago.
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The Swiss was last in action in mid-March when he was knocked out of the BNP Paribas Open at Indian Wells by Spain's Rafael Nadal.
The 25-year-old Jankovic won at Indian Wells in March and then reached the quarterfinals at another U.S. event in Charleston and also in Stuttgart, Germany.
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Nadal was happy to make it through to final after falling in the last four in his previous Masters events in Miami and Indian Wells.
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