Li Na has pulled out of the upcoming Porsche Tennis Grand Pix in Germany. There has been no official comment from the world number 2 however it has been reported that she has travelled to Munich, Germany for some medical tests on her left knee.
Li Na has enjoyed a sucessful couple of weeks by reaching the semi finals at Indian Wells and the final in Miami last week. Li has suffered from knee troubles in the past but it was mainly with her right knee. At the start of 2009 she missed the Austrailian Open due to a right knee injury. The $710,000 tournament begins on april 21st and the seeding will now be headed by Agnieszka Radwańska.