2011 Poznań Porsche Open – Singles
Denis Gremelmayr was the defending champion. Vincent Millot defeated him in the second round. Rui Machado won the final 6–3, 6–3, against Jerzy Janowicz. Seeds

Draw

Finals

Top half

Bottom half

External links
 Main draw
 Qualifying draw

2011 ATP Challenger Tour
2011 Singles
2011 in Poznań