The singles field featured Viña del Mar champion Fernando González, former World No. 1 and 2007 Cincinnati Masters semifinalist Lleyton Hewitt, and Marseille semifinalist Marcos Baghdatis.
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Other top seeds competing were 2007 Metz semifinalist Guillermo Cañas, Buenos Aires and Acapulco quarterfinalist Potito Starace, Michaël Llodra, Robin Söderling and Nicolas Kiefer.
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Other top seeds were Las Vegas champion Sam Querrey, Indian Wells Masters quarterfinalist Tommy Haas, Fabrice Santoro, Robby Ginepri and Thomaz Bellucci.