Marco Chiudinelli, of Switzerland, returns a ball, during a training session of the Swiss Davis Cup tennis team prior to the Davis Cup World Group quarterfinal match between Switzerland and Kazakhstan, in Geneva, Switzerland, Wednesday, April 2, 2014. The Davis Cup World Group quarterfinal  between Switzerland and  Kazakhstan will take place from April 4 to April 6. (AP Photo/Keystone,Salvatore Di Nolfi)

Switzerland Tennis Davis Cup

Marco Chiudinelli, of Switzerland, returns a ball, during a training session of the Swiss Davis Cup tennis team prior to the Davis Cup World Group quarterfinal match between Switzerland and Kazakhstan, in Geneva, Switzerland, Wednesday, April 2, 2014. The Davis Cup World Group quarterfinal between Switzerland and Kazakhstan will take place from April 4 to April 6. (AP Photo/Keystone,Salvatore Di Nolfi)

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