Jelena Jankovic uspet at Beijing

BEIJING -- Third-seeded Jelena Jankovic has been upset by fellow Serb Bojana Jovanovski in the second round of the China Open.

Jovanovski won 6-2, 2-6, 2-6, while unseeded Angelique Kerber upset last year's runner-up, Agnieszka Radwanska, 5-7, 7-6 (3), 7-5 in a first-round match Monday.

In men's first-round play, German qualifier Michael Berrer beat fifth seed Tomas Berdych 4-6, 7-5, 6-4, while Americans John Isner and Mardy Fish each advanced in straight sets and Sam Querry was beaten by Frenchman Gilles Simon 6-3, 3-6, 6-2.