Argentina's Horacio Zeballos, left, returns the ball to Italy's Fabio Fognini and Simone Bolelli as his teammate Eduardo Schwank looks on during their Davis Cup  doubles match in Mar del Plata, Argentina, Saturday, Feb. 1, 2014.  (AP Photo/Eduardo Di Baia)

Argentina Italy Davis Cup Tennis

Argentina's Horacio Zeballos, left, returns the ball to Italy's Fabio Fognini and Simone Bolelli as his teammate Eduardo Schwank looks on during their Davis Cup doubles match in Mar del Plata, Argentina, Saturday, Feb. 1, 2014. (AP Photo/Eduardo Di Baia)

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