Czech Republic's Tomas Berdych returns the ball to Argentina's Carlos Berlocq during the Davis Cup semifinals tennis match in Buenos Aires, Argentina on Sunday, Sept. 16, 2012. (AP Photo/Eduardo Di Baia)

Photo by: Eduardo Di Baia

Czech Republic's Tomas Berdych returns the ball to Argentina's Carlos Berlocq during the Davis Cup semifinals tennis match in Buenos Aires, Argentina on Sunday, Sept. 16, 2012. (AP Photo/Eduardo Di Baia)