Zagreb 2011
Ivan Dodig won the title, beating Michael Berrer 6–3 6–4 in the final.
Main draw 28 players
- 1🇭🇷Marin Cilic#97Quarterfinals · Lost to Florian Mayer
- 2🇭🇷Ivan LjubicicQuarterfinals · Lost to Ivan Dodig
- 3🇪🇸Guillermo Garcia LopezSemifinals · Lost to Ivan Dodig
- 4🇫🇷Richard GasquetQuarterfinals · Lost to Michael Berrer
- 5🇩🇪Florian MayerSemifinals · Lost to Michael Berrer
- 6🇪🇸Marcel GranollersRound of 32 · Lost to Ivan Dodig
- 7🇩🇪Philipp PetzschnerRound of 16 · Lost to Alex Bogomolov Jr
- 8🇩🇪Michael BerrerFinal · Lost to Ivan Dodig
- 🇭🇷Ivan DodigFinal · Champion
- Q🇷🇺Alex Bogomolov JrQuarterfinals · Lost to Guillermo Garcia Lopez
- 🇫🇷Arnaud ClementRound of 16 · Lost to Richard Gasquet
- Q🇸🇮Blaz KavcicRound of 16 · Lost to Michael Berrer
- 🇩🇪Daniel BrandsRound of 16 · Lost to Ivan Ljubicic
- 🇷🇺Igor KunitsynRound of 16 · Lost to Marin Cilic
- 🇺🇦Illya MarchenkoRound of 16 · Lost to Ivan Dodig
- 🇸🇰Lukas LackoRound of 16 · Lost to Guillermo Garcia Lopez
- 🇨🇿Radek StepanekRound of 16 · Lost to Florian Mayer
- WC🇭🇷Antonio VeicRound of 32 · Lost to Alex Bogomolov Jr
- Q🇷🇸Dusan Lajovic#158Round of 32 · Lost to Illya Marchenko
- WC🇭🇷Franko SkugorRound of 32 · Lost to Florian Mayer
- 🇭🇷Ivo KarlovicRound of 32 · Lost to Daniel Brands
- 🇨🇿Jan HajekRound of 32 · Lost to Philipp Petzschner
- 🇨🇿Jaroslav PospisilRound of 32 · Lost to Igor Kunitsyn
- 🇹🇷Marsel IlhanRound of 32 · Lost to Lukas Lacko
- 🇰🇿Mikhail Kukushkin#344Round of 32 · Lost to Arnaud Clement
- 🇩🇪Mischa ZverevRound of 32 · Lost to Blaz Kavcic
- WC🇭🇷Nikola MekticRound of 32 · Lost to Michael Berrer
- Q🇦🇹Stefan KoubekRound of 32 · Lost to Radek Stepanek