To end the year, he participated in the 2008 Davis Cup and was up on an opening match against David Ferrer. Despite a victory, he ended up on the losing team against Spain in the Davis Cup finals in Argentina (The Argentine team lost 1–3). He made some offensive comments in the press against Spain, the Spanish tennis team, and Rafael Nadal. It was rumoured that he and Agustín Calleri were involved in a fight after they lost their doubles rubber. Nalbandian denied this. He was fined $10,000 for leaving the stadium after his and Calleri's defeat in doubles to Spaniards Fernando Verdasco and Feliciano López, and for his refusal to appear at a subsequent press conference to comment on the Argentine team's setback.