What's going on in Shanghai?

Rafa Nadal, who announced he would have his appendix removed at the end of the year, added his name to the list of upsets at the Shanghai Masters after the Spaniard suffered a 6-3 7-6(6) loss to Feliciano Lopez in the second round. Fourth seed Stan Wawrinka and Kei Nishikori also made early exits while Roger barely survived, saving five match points before overcoming Argentina's Leonardo Mayer 7-5 3-6 7-6(7). And last but not least, Fabio Fognini left a lasting impression when he decided to make a less than cordial gesture to the crowd after his 7-6, 6-4 loss to Chinese world number 553 Wang Chuhan.