Li Na, Kerber move closer to Istanbul WTA Championships semi-finals

Chinese No.1 Li Na has beaten Serbian ace Jelena Jankovic 6-3, 2-6, 6-3 at the season-ending WTA Championships on Thursday, clinching her second win at the tournament and coming a step closer to the semi-finals.

Li, who is the first singles player from China to have won a Grand Slam title and the first to have reached the world's top five, is within touching distance of becoming the first to qualify for the semi-finals in the tour's flagship tournament.

According to Sport24, however, the contest between Li and Jankovic was very unpredictable, with Li having three points for a 4-2 second set lead, before losing five games in a row and also letting slip a break of serve at 3-1 in the final set to be pegged back to 3-3.

Meanwhile, German Angelique Kerber, the last player to qualify for the WTA Championships, kept alive her against-the-odds chances of surviving into the semi-finals after a surprise win over third-seeded Pole Agnieszka Radwanska, who reached last year's Wimbledon final, by 6-2, 6-2 in less than an hour, the report added.