Colombia striker Radamel Falcao has failed to recover from knee ligament surgery in January and was left out of the World Cup squad on Monday. Monaco forward Falcao was a key player for Colombia with nine goals in the South American qualifiers. (For more sports news and updates,followAhramOnlineSportson Twitter at@AO_Sportsand on Facebook atAhramOnlineSports.) http://english.ahram.org.eg/News/102808.aspx