 Rio de Janeiro was shortlisted receiving a 6 @.@ 4 score , according to a study of its Application File delivered to the IOC Working Group on January 14 , 2008 . As a Candidate city , Rio de Janeiro submitted its Candidature File to the IOC on February 11 , 2009 . The <unk> was analyzed by the IOC Evaluation Commission , which arrived in the city on April 27 , 2009 , to assess the quality of the bid . Between April 29 and May 2 , the Commission attended technical presentations and made inspections in all the existing venues across the city , giving a favorable assessment in its final report . 
