2008 SAP Open – Singles

Andy Murray was the defending champion, but chose not to participate that year.

First-seeded Andy Roddick won in the final 6–4, 7–5, against Radek Štěpánek.

Seeds
• # 🇺🇸 Andy Roddick (champion)

• # 🇺🇸 James Blake (quarterfinals)

• # 🇩🇪 Tommy Haas (second round)

• # 🇨🇿 Radek Štěpánek (final)

• # 🇰🇷 Hyung-taik Lee (withdrew due to a back injury)

• # 🇦🇹 Jürgen Melzer (first round)

• # 🇺🇸 Sam Querrey (first round)

• # 🇧🇪 Kristof Vliegen (second round)