(CNN) -- The women's draw at the Indian Wells Masters event has been thrown wide open after second seed Jelena Jankovic and third-seeded Elena Dementieva were both beaten on Saturday.
Pavlyuchenkova celebrates her victory over Jelena Jankovic in the Indian Wells Masters.
Serb Jankovic, who ended 2008 as number one in the world but has now dropped to third in the rankings, slumped 6-4 6-4 to Russian 17-year-old Anastasia Pavlyuchenkova.
Meanwhile, Russian Dementieva ran out of steam in the final set to go down 7-6 2-6 6-1 to Czech qualifier Petra Cetkovska -- ensuring only 17 of the 32 seeded women failed to make it out of the second round.
Fifth seed Ana Ivanovic, the defending champion defeated Anastasiya Yakimova of Belarus 6-4 6-3 and now joins top-seeded Russian Dinara Safina as the tournament favorite.
Also through is seventh-seeded Pole Agnieszka Radwanska, who fought back from dropping the opening set to beat Australian Samantha Stosur 3-6 6-3 7-5.