Marin Čilić Marin Čilić (; born 28 September 1988) is a Croatian professional tennis player. Čilić has won 20 ATP Tour singles titles, including a major at the 2014 US Open. He was also runner-up at the 2017 Wimbledon Championships and the 2018 Austral ...

was the two-time defending champion; however, he was eliminated by

Florian Mayer Florian Mayer (; born 5 October 1983) is a German former professional tennis player. Mayer reached his career-high singles ranking of world No. 18 in June 2011. Also in 2011, Mayer won his first ATP title after four previous defeats in ATP fin ...

in the quarterfinals.

Ivan Dodig Ivan Dodig (; born 2 January 1985) is a Croatian professional tennis player who primarily specialises in doubles. He is a six-time Grand Slam champion, having won men's doubles titles at the 2015 French Open with Marcelo Melo, and the 2021 Au ...

claimed the first ATP title of his career, by defeating

Michael Berrer Michael Berrer (born 1 July 1980) is a German retired professional tennis player. He reached his career-high singles ranking of world No. 42 in May 2010. Career 2010 He reached the quarterfinal at the Aircel Chennai Open in January, losing t ...

6–3, 6–4 in the final match.

Seeds

First four seeds received a bye into the second round. #

''(quarterfinals)'' #

Ivan Ljubičić Ivan Ljubičić (; born 19 March 1979) is a Croatian former professional tennis player. He reached a career-high Association of Tennis Professionals (ATP) world No. 3 singles ranking on 1 May 2006. His career highlights include reaching a Grand S ...

''(quarterfinals)'' #

Guillermo García-López Guillermo () is the Spanish form of the male given name William. The name is also commonly shortened to 'Guille' or, in Latin America, to nickname 'Memo'. People *Guillermo Amor (born 1967), Spanish football manager and former player *Guillermo Ar� ...

''(semifinals)'' #

Richard Gasquet Richard Gabriel Cyr Gasquet (; born 18 June 1986) is a French professional tennis player. His career-high ATP singles ranking is world No. 7, attained on 9 July 2007. He has won a total of 15 singles titles on the ATP Tour. His best performances ...

''(quarterfinals, retired)'' #

''(semifinals)'' # Marcel Granollers ''(first round)'' #

Philipp Petzschner Philipp Petzschner (born 24 March 1984) is a retired German professional tennis player. He was known for his hard-hitting forehand and bursts of speed around the court. He reached a career-high doubles ranking of world No. 9, which he achieved in ...

''(second round)'' #

''(final)''

Qualifying

Draw

Finals

Top half

Bottom half

References

Main Draw

Qualifying Draw
{{DEFAULTSORT:2011 PBZ Zagreb Indoors - Singles PBZ Zagreb Indoors - Singles Zagreb Indoors 2011 PBZ Zagreb Indoors