Chinas interest in the WTA Tenerife Ladies Open ended on Friday as Zheng Saisai and Zhang Shuai both lost as the season heads to its final two tournaments.Chinese No 3 Zheng was beaten by Colombian teenager Camila Osorio in straight sets with the 19-year-old winning 7-5, 6-1 in an hour and 42 minutes.This was the first career meeting between the world No 86 Zhang and world No 63 Osorio.Osorio had beaten No 1 seed Elina Sv
