Just out of interest, if there are rules against WOs, can a player just play a few points and then quit and claim injury after explaining to the doctor? If so why dont the players do it the 2nd way?Will spectators feel better the 2nd way? If this has happened to Chen Jin tournament after tournament it is not surprising because of a recurring back problem. By giving WO and instead of stepping on Court and playing a few points,is LD or even CBA sending some message,whatever it is? Surely a player cannot be so seriously injured that he cant walk out on Court, or is it some form of protest or defiance?