2003 Western & Southern Financial Group Masters – Singles

• Andre Agassi (withdrew) • Juan Carlos Ferrero (second round) • Roger Federer (second round) • Carlos Moyá (first round) • Lleyton Hewitt (first round) • Guillermo Coria (quarterfinals) • Andy Roddick (champion) • Rainer Schüttler (semifinals) • Paradorn Srichaphan (first round) • Sébastien Grosjean (first round) • Sjeng Schalken (second round) • Jiří Novák (first round) • Fernando González (second round) • Gustavo Kuerten (first round) • Tommy Robredo (first round) • Martin Verkerk (first round) • Félix Mantilla (first round) ==Draw==