Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Nicolás Massú was the defending champion but lost in the first round to Agustín Calleri. Carlos Moyà won in the final 6 3, 4 6, 6 4 against Guillermo Coria. The 2003 Copa AT&T was a tennis tournament played on outdoor clay courts at the Buenos Aires Lawn Tennis Club in Buenos Aires in Argentina and was part of the International Series of the 2003 ATP Tour. The tournament ran from February 17 through February 23, 2003.