Copa Argentina de Tenis Peugeot Buenos Aires, Argentina December 15-18, 2005 Surface - Hard Singles Seeds: 1. David Nalbandián 2. Mariano Puerta 3. Juan Ignacio Chela 4. Gustavo Kuerten First Round (1)David Nalbandian (ARG) bye Juan Mónaco (ARG) d. Mariano Zabaleta (ARG) 6-1 6-4 José Acasuso (ARG) d. Guillermo Cañas (ARG) 6-3 6-4 (3)Juan Ignacio Chela bye (4)(WC)Gustavo Kuerten bye (WC)Luis Horna (PER) d. Carlos Berlocq (ARG) 6-2 6-2 [Horna replaces Franco Squillari and Berlocq replaces Gaston Gaudio] Agustín Calleri (ARG) d. Juan Martín Del Potro (ARG) 3-6 6-3 6-1 (2)Mariano Puerta (ARG) bye Quarterfinals (1)David Nalbandián (ARG) d. Juan Mónaco (ARG) 7-5 6-1 (3)Juan Ignacio Chela (ARG) d. José Acasuso (ARG) 7-5 3-6 7-5 (WC)Luis Horna (PER) d. (4)(WC)Gustavo Kuerten (BRA) 6-2 6-0 Agustín Calleri (ARG) d. (2)Mariano Puerta (ARG) 6-3 7-6(4) Semifinals (1)David Nalbandián (ARG) d. (3)Juan Ignacio Chela (ARG) 6-3 6-4 Agustín Calleri (ARG) d. (WC)Luis Horna (PER) 6-2 6-4 Final (1)David Nalbandián (ARG) d. Agustín Calleri (ARG) 3-6 6-2 6-3 courtesy Ariel Pertile