PRAGUE, CZECH REPUBLIC - SEPTEMBER 14: Carlos Berlocq (R) and Horacio Zeballos (L) of Argentina return a shot in the doubles game against Radek Stepanek and Tomas Berdych of Czech Republic during day two of the Davis Cup semifinal match between Czech Republic and Argentina at the O2 Arena on September 14, 2013 in Prague, Czech Republic. (Photo by Matej Divizna/Getty Images)
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