World No 2 Sharapova twisted her ankle against Wimbledon champion Petra Kvitova in the Pan-Pacific Open quarterfinals on Thursday .
World No 2 Sharapova was forced to quit the Tokyo tournament .
World No 2 Sharapova twisted her ankle against Wimbledon champion Petra Kvitova in the Pan-Pacific Open quarterfinals on Thursday and was forced to quit the Tokyo tournament .