2003 Brasil Open – SinglesGustavo Kuerten was the defending champion but lost in the semifinals to Rainer Schüttler.Sjeng Schalken won in the final 6–2, 6–4 against Rainer Schüttler.Seeds Rainer Schüttler ' Sjeng Schalken Gustavo Kuerten ' Fernando González ' Vince Spadea ' Juan Ignacio Chela ' Flávio Saretta ' Kenneth Carlsen ''''