Five-times Olympic swimming champion Ian Thorpe is in a Sydney hospital fighting a "serious" infection and may not swim again, his manager told Australian media late on Tuesday. "It's serious but it's not life-threatening," Thorpe's agent James Erskine told Australian Associated Press. "From a competitive point of view - he will not be swimming competitively again I don't think." (For moresports news and updates,followAhramOnline Sportson Twitter at@AO_Sportsand on Facebook atAhramOnlineSports.) http://english.ahram.org.eg/News/98596.aspx