Rafa Nadal will decide by the end of this week whether he is fit enough to defend his US Open title after suffering a right wrist injury that ruled him out of two tune-up events, the Spaniard’s spokesman said yesterday. “He went for a check (up) today in Barcelona and (the) imagery looks as predicted. He will practice in the next days and decide on Friday or Saturday,” his spokesman said . The 28-year-old Majorcan left-hander sustained the injury during practice last month and has been training with a cast on his right wrist.