Russian pole vault champion Yelena Isinbayeva (L) stands with Chinese sprint hurdler Liu Xiang during a press conference in Shanghai on September 18, 2009. Chinese track star Liu Xiang will make his much-awaited comeback at the Shanghai Golden Grand Prix on September 20, 2009 before a hometown crowd, looking to recapture some hurdles magic after his shock withdrawal from the Beijing Games. Russian pole vault queen Isinbayeva also will compete in a bid for redemption after failing to win a medal at the August 2008 world championships in Berlin.