Slovak Dominika Cibulkova makes it through to the semifinals, while Serb Jelena Jankovic suffers an unexpected loss in the quarterfinals of 2012 Mercury Insurance Open in Carlsbad, USA.

Second-seeded Cibulkova defeated last year champion’s younger sister Urszula Radwanska from Poland in two somewhat identical sets. The final result: 6-4, 6-4. It was Radwanska who won a breakpoint in the first game of the match, yet she handed over the opening set to Cibulkova with her third lost serve. The second set was a déjà vu for the Pole – the match ended with her losing a third consecutive serve.

The match between third-seeded Jankovic and a qualifier Yang-Jun Chan from Chinese Taipei was another festival of breakpoints and lost serves. Jankovic was 3-5 down in both of the first two sets, but made it to the tie-breaks. She kept her nerves in the first one, but Chan was persistent enough to save two match points and grab a win in the second one. Jankovic continued to struggle in the third set, too. She went 2-5 behind, and the comeback was not complete this time. End result: 6-7 (4), 7-6 (8), 7-5 for Chan.

Cibulkova’s opponent in the semifinals will be the winner of the Lepchenko-Petrova match, and Chan will be waiting for the result of the clash between Bartoli and McHale.