2009 Medibank International Sydney – Men's singles

Dmitry Tursunov was the defending champion, but lost in the first round to Richard Gasquet.

David Nalbandian won in the final 6–3, 6–7(9–11), 6–2, against Jarkko Nieminen.

Seeds
The top four seeds receive a bye to the second round. • # 🇷🇸 Novak Djokovic (semifinals)

• # 🇫🇷 Gilles Simon (second round)

• # 🇫🇷 Jo-Wilfried Tsonga (quarterfinals, withdrew due to a back injury)

• # 🇦🇷 David Nalbandian (champion)

• # 🇷🇺 Igor Andreev (second round)

• # 🇨🇿 Tomáš Berdych (first round)

• # 🇪🇸 Tommy Robredo (second round)

• # 🇺🇸 Mardy Fish (first round)

Seeds
• # 🇫🇷 Julien Benneteau (moved Into main draw)

• # 🇷🇺 Teymuraz Gabashvili (first round)

• # 🇮🇹 Potito Starace (qualifying competition, lucky loser)

• # 🇫🇷 Nicolas Devilder (first round)

• # 🇫🇷 Jérémy Chardy (qualified)

• # 🇨🇿 Jan Hernych (second round)

• # 🇩🇪 Denis Gremelmayr (qualified)

• # 🇪🇨 Nicolás Lapentti (first round)

• # 🇰🇿 Andrey Golubev (first round)

Qualifiers
• # 🇨🇦 Frank Dancevic

• # 🇧🇪 Xavier Malisse

• # 🇩🇪 Denis Gremelmayr

• # 🇫🇷 Jérémy Chardy

Lucky loser
• # 🇮🇹 Potito Starace