The Women's Pole vault event at the 2011 World Championships in Athletics took place at the Daegu Stadium on August 28 and 30.
American Jennifer Suhr had the two best clearances prior to the competition and Martina Strutz was ranked second in the world behind her.
Silke Spiegelburg (the Diamond League leader), world indoor champion Fabiana Murer and Olympic medalist Svetlana Feofanova were the other main potential medalists.
World record holder Isinbayeva was the last to start, clearing her opening height but then struggling with her next three attempts, going under the bar on the last one.
At 4.85 Murer tied her own National and Area record, clearing on her first attempt and making Strutz pass to 4.90 to try to win.