Juan Martín del Potro was the defending champion, but chose not to compete. John Isner won in the final, 6–3, 5–7, 7–6(7–2), against Arnaud Clément. Seeds The top four seeds receive a bye to the second round. Draw Finals Top half Bottom half Qualifying All seeded players received a bye into the second round, and all players playing in the fourth qualifier received a bye into the second round. Seeds Qualifiers Draw First qualifier Second qualifier Third qualifier Fourth qualifier External links Main Draw Qualifying Draw Heineken Open - Singles 2010 Heineken Open