Jankovic defies knee injury to tame Dane

LONDON (Reuters) - Second seed Jelena Jankovic battled through a painful knee injury to overcome Danish teenager Caroline Wozniaki 2-6 6-4 6-2 and reach the fourth round at Wimbledon on Saturday.

The Serb slipped and jolted her left knee at the beginning of the match and appeared in trouble when the 17-year-old Wozniaki, seeded 31, capitalised on a string of errors from her opponent to go a set up.

An early break was enough for Jankovic, 23, to square the match before the Serb took a medical timeout to have her swollen left knee heavily strapped. Wincing after almost every point, a hobbling Jankovic broke to lead 3-1 and, playing on without the strapping, she limped to victory.

World number one and top seed Ana Ivanovic and former champion Maria Sharapova, the third seed, have already been humbled this week. Jankovic will hope intensive treatment over the next 48 hours will allow her to face Thailand's Tamarine Tanasugarn for a place in the quarter-finals on Monday.