Federico Delbonis defeats Thomaz Bellucci to secure 3-2 win over Brazil . Leonardo Mayer took 42 minutes , six hours to beat Joao Souza . Their match was the longest singles match ever played in the Davis Cup . Argentina will play against Serbia in the next round .
Federico Delbonis defeats Thomaz Bellucci to secure 3-2 win over Brazil . Leonardo Mayer took six hours , 42 minutes to beat Joao Souza . Their match was the longest singles match ever played in the Davis Cup . Argentina will play against Serbia in the next round .