Copa Argentina de Tenis 2007 Buenos Aires, Argentina December 13-16, 2007 Quarterfinals Juan Monaco (ARG) d. Nicolas Massu (CHI) 6-2 6-3 [Nicolas Massu replaces Fernando Gonzalez and Gonzales replaces Guillermo Canas] Carlos Moya (ESP) d. Mariano Zabaleta (ARG) 6-2 6-3 Juan-Ignacio Chela (ARG) d. Agustín Calleri (ARG) 7-5 6-3 David Nalbandian (ARG) d. Luis Horna (PER) 6-4 6-4 Semifinals Juan Monaco (ARG) d. Carlos Moya (ESP) 7-6(5) 7-6(4) David Nalbandian (ARG) d. Juan-Ignacio Chela (ARG) 6-1 6-3 Finals David Nalbandian (ARG) d. Juan Monaco (ARG) 6-4 7-5