Safina, seeded fourth, called her straight-sets victory on Friday over eighth-seed Azarenka "the best match I ever played."

Jankovic defeated ninth-seeded Nadia Petrova of Russia 7-5, 6-4, and will rise to the top of the WTA rankings if she wins the championship.

The other semi-final will be between Italy's Flavia Pennetta, seeded 10th, and Bethanie Mattek of the U.S., who is unseeded and ranked 59th in the world.