Juan Martin Del Potro is out of the China Open in Tokyo . He was defeated by Tokyo 's Feliciano Lopez 6-3 one -0 . `` I need time , I need to work on a few things to get back to my best level . Jelena Jankovic is out of the Japan Open after defeat to Jelena Jankovic .
Juan Martin Del Potro is out of the China Open in Tokyo . He was defeated by Tokyo 's Feliciano Lopez 6-3 one -0 . Jelena Jankovic is out of the Japan Open after defeat to Jelena Jankovic .